Learning support apparatus, learning support method, learning support system, and program

Abstract

To provide a learning support apparatus that creates closed-end quizzes that can further improve learning effect.SOLUTION: A learning support apparatus stores a plurality of question sentences, and a plurality of correct answer options different from each other in difficulty for each one of the plurality of question sentences, and stores the past percentage of correct answers for each one of the plurality of question sentences. The learning support apparatus selects one question sentence from the plurality of question sentences. The learning support apparatus determines, from the plurality of correct answer options, a correct answer option with difficulty according to the stored past percentage of correct answers, for the selected one question sentence.SELECTED DRAWING: Figure 11

Description

Technical Field

[0001] The present invention relates to a learning support device, a learning support method, a learning support system, and a program.

Background Art

[0002] According to Patent Document 1, it is described that a solver is made to answer a basic problem group consisting of a plurality of basic problems. If the correct answer rate is high, a confirmation problem group consisting of more difficult confirmation problems is presented. If the correct answer rate is low, the options of the basic problems are changed. Thus, it is said that it becomes possible to make the user fix knowledge.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, companies and the like may create a database of failure cases for new employees and others to learn from the failure cases. In order to improve learning efficiency in a short time, more appropriate question sentences and answer sentences are required. In particular, a multiple-choice quiz that allows a user to select the correct option from a plurality of options is suitable for allowing the user to learn failure cases. If a user repeatedly answers the same multiple-choice quiz with a certain interval, the user may memorize the correct option and the learning effect may not improve.

[0005] In Patent Document 1, it is described that when the correct answer rate for the basic question group is not more than a first predetermined number, the options for the basic questions are increased or the content of the options is changed. However, how to change the content of the options is not described. Also, it is described that when the correct answer rate for the basic question group is more than the first predetermined number, a confirmation question group is presented. It is described that the basic questions are questions for selecting incorrect answer options, while the confirmation questions are questions for selecting correct answer options. However, how to create the correct answer options and incorrect answer options in the confirmation questions is not described.

[0006] Therefore, an object of the present invention is to provide a learning support device that can create a multiple-choice quiz capable of enhancing the learning effect.

Means for Solving the Problems

[0007] The present invention is, for example, A learning support device for creating a multiple-choice quiz, A quiz storage means for storing a plurality of question texts and a plurality of correct answer options with different difficulty levels for each of the plurality of question texts, A correct answer rate storage means for storing the past correct answer rate for each of the plurality of question texts, A selection means for selecting one question text from the plurality of question texts stored in the quiz storage means, A creation means for determining a correct answer option with a difficulty level corresponding to the past correct answer rate stored in the correct answer rate storage means for the selected one question text from among the plurality of correct answer options, and creating a multiple-choice quiz including the one question text and the correct answer option with a difficulty level corresponding to the past correct answer rate, A learning support device having the above is provided.

Effects of the Invention

[0008] According to the present invention, a learning support device that can create a multiple-choice quiz capable of enhancing the learning effect is provided.

Brief Description of the Drawings

[0009]

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Modes for Carrying Out the Invention

[0010] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. Note that the following embodiments do not limit the invention according to the claims. Although a plurality of features are described in the embodiments, not all of these plurality of features are essential to the invention, and the plurality of features may be arbitrarily combined. Further, in the accompanying drawings, the same or similar configurations are denoted by the same reference numerals, and redundant descriptions are omitted.

[0011] <Example 1> (1) Learning support system FIG. 1 shows a learning support system 100. The learning support device 101 is a personal computer (PC) or a server computer, and may be referred to as an information processing device. The learning support device 101 includes a creation device 102 and a question device 103. The creation device 102 and the question device 103 may be physically realized by one computer, or the creation device 102 and the question device 103 may be physically realized by different computers. The creation device 102 is a computer that creates quizzes from a previously stored failure case collection. The question device 103 is a computer that presents quizzes to the user terminals 105a to 105c. The learning support device 101 and the user terminals 105a to 105c are connected via a network 110. The network 110 may include the Internet, a LAN (local area network), and a cellular network, etc. The user terminals 105a to 105c are computers used by respondents who answer the quizzes. The user terminals 105a to 105c are, for example, PCs, smartphones, or tablet computers. Here, three user terminals 105a to 105c are illustrated, but the number of user terminals 105a to 105c may be one or more. When matters common to the user terminals 105a to 105c are described, the user terminals 105a to 105c may be denoted as the user terminal 105.

[0012] (2) Learning support device Figure 2 shows the hardware of the learning support device 101. The CPU 200 includes one or more processors (processing circuits) that implement various functions according to programs stored in the storage device 210. The communication circuit 201 includes at least one of a wired communication circuit and a wireless communication circuit for communicating with other computers via the network 110. The input device 202 includes a keyboard, a touch sensor, a microphone, a pointing device, and the like. The output device 203 includes a sound output circuit that outputs sound or audio, and a display device that displays visual information. The storage device 210 includes a read-only memory (ROM), a random access memory (RAM), a hard disk drive (HDD), a solid state drive (SSD), and the like.

[0013] The storage device 210 stores various programs and data. The Web server program 211 is a program that provides a web-based user interface to quiz creators and quiz respondents. Here, the web-based learning support system 100 is illustrated, but this is just an example. The learning support system 100 may be a server-client type computer system that is not web-based. The creation program 212 is a program that creates quiz data for learning failure cases based on the failure case DB 214 stored in the storage device 210 and registers the quiz data in the quiz DB 215. DB is an abbreviation for database. The question program 213, the quiz DB 215 holds various quiz data. The quiz data includes the text forming the quiz and the quiz screen. The quiz screen is composed of, for example, an html file, image data, and CSS data. Html is an abbreviation for hypertext markup language. CSS is an abbreviation for cascading style sheet. The user DB 216 stores user authentication information (login ID and password) and quiz scores (number of answer attempts, correct answer rate) for each user.

[0014] (3) User Terminal Figure 3 shows the hardware of the user terminal 105. The CPU 300 includes one or more processors (processing circuits) that implement various functions according to programs stored in the storage device 310. The communication circuit 301 includes at least one of a wired communication circuit and a wireless communication circuit for communicating with other computers via the network 110. The input device 302 includes a keyboard, a touch sensor, a microphone, a pointing device, and the like. The output device 303 includes a sound output circuit that outputs sound or audio, and a display device that displays visual information. The storage device 310 includes a read-only memory (ROM), a random access memory (RAM), a hard disk drive (HDD), and a solid state drive (SSD), and the like.

[0015] The storage device 310 stores various programs and data. The answer program 311 is a program that receives quiz data issued from the question device 103, displays a quiz screen on the output device 303 according to the quiz data, and transmits the answer input from the input device 302 to the question device 103. When the quiz screen is web-based, the answer program 311 may be a web browser program.

[0016] (4) Failure case DB Figure 4 shows an example of the information stored in the failure case DB 214. The one-word phrase (slogan) is an educational suggestion (e.g., maxim, slogan) extracted from failure cases formed in the past. Generally, there are common phenomena, causes, or countermeasures in multiple failure cases. Therefore, an educational suggestion common to multiple failure cases is extracted as a one-word phrase and stored in the failure case DB 214. Knowledge is a descriptive text that explains a failure case and includes descriptive texts such as the phenomenon, cause, and countermeasure of the failure. The tag information is optional information and includes a plurality of words related to the phenomenon, cause, and countermeasure of the failure.

[0017] In FIG. 4, the phrase "looks painful at a glance" implies that, for example, since the appearances of multiple parts are similar, the assembler may accidentally attach the wrong part to the main body. The knowledge "mistake due to similar things being close" implies that, for example, when multiple parts with similar appearances are close, the assembler may pick up the wrong part. Thus, knowledge includes an explanation of the phrase in one word.

[0018] "Increased risk by believing the mark" implies that, for example, it is difficult to notice numbers with hard-to-find meanings, characters described in unfamiliar languages, and the omission or mistake of marks.

[0019] "You can't believe that preconception" implies that, for example, when being trapped by preconceptions or assumptions, it is difficult to notice mistakes.

[0020] "Dispersed responsibility, cruel result" implies that when working with multiple people and trusting the other party too much, it is difficult to notice mistakes.

[0021] "Regret starting after stopping" implies that, for example, when work is interrupted, during the interruption, the worker may forget or misinterpret the progress of the work, and work omissions are likely to occur.

[0022] "People get used to it, for better or for worse" implies that, for example, when a worker gets used to a specific task, they will perform that specific task unconsciously, making mistakes more likely to occur.

[0023] (5) Method for creating a multiple-choice quiz (5-1) Basic concept An alternative-form quiz includes a question text, one correct answer option, and one or more incorrect answer options. In Example 1, for a certain question text, a plurality of correct answer options with different answer difficulties are prepared. For example, if there are N levels of difficulty, N correct answer options are created in advance for one question text. If N = 3, a correct answer option with high difficulty, a correct answer option with medium difficulty, and a correct answer option with low difficulty are created.

[0024] The incorrect answer options are selected according to a predetermined rule from the remaining options obtained by removing the correct answer option from a plurality of pre-prepared options. Examples of the predetermined rule include a method of randomly selecting and a method of selecting an incorrect answer option with the same difficulty as the correct answer option. In the latter case, for the incorrect answer options, a correct answer option with high difficulty, a correct answer option with medium difficulty, and a correct answer option with low difficulty are also created in advance.

[0025] When there are options for each level of difficulty for a certain question text in this way, the difficulty corresponding to the past correct answer rate of the respondent for that one question text is determined, and the option corresponding to the determined difficulty is selected. (i) Both the correct answer option and the incorrect answer option may be selected according to the correct answer rate. (ii) The correct answer option may be selected according to the correct answer rate, while the incorrect answer option may be randomly selected. (iii) The correct answer option may be randomly selected, while the incorrect answer option may be selected according to the correct answer rate.

[0026] When the correct answer rate is taken into account, the options may be determined when presenting questions to the respondent, or the options may be determined for the next question when the correct answer rate is updated.

[0027] Incidentally, the learning target by the multiple-choice quiz is arbitrary. As an example, in this embodiment, a multiple-choice quiz suitable for the user to learn failure cases is created. The failure case DB 214 stores one-word phrases and knowledge extracted from various failure cases. Therefore, the creation device 102 creates a quiz for teaching the user one-word phrases suitable for failure cases (phenomena, causes, and countermeasures). The creation device 102 reads out, from the failure case DB 214, the one-word phrase most suitable for the failure case (for example, one-word phrases for high difficulty, one-word phrases for medium difficulty, and one-word phrases for low difficulty) as the correct option. Further, the creation device 102 determines one or more incorrect options from the remaining one-word phrases excluding the one-word phrase determined as the correct option. For example, there is a method of randomly selecting m one-word phrases from the remaining n - 1 one-word phrases out of n one-word phrases (m <= n - 1). In this case, the total number of options included in the quiz is m + 1. When m = 2, the CPU 200 randomly selects two one-word phrases.

[0028] (5-2) Start of Quiz FIG. 5 shows an input screen 500 displayed on the output device 303 of the user terminal 105. The input screen 500 has a button 501. The button 501 is an object for starting the quiz. The user operates the input device 302 to start the quiz.

[0029] (5-3) Quiz Screen FIG. 6 shows an example of a quiz screen 600 displayed on the output device 303 of the user terminal 105. The question text 601 includes a problem statement 602 and an explanation text 603 of the phenomenon. The problem statement 602 is a fixed message indicating a method for answering the quiz. The explanation text 603 of the phenomenon is a text explaining the phenomenon which is one of the three elements constituting the failure case. The m + 1 options 604 include one correct option and m incorrect options. In this example, m is 2.

[0030] The question presenting device 103 may randomly rearrange the correct option and m incorrect options and place them on the quiz screen 600. Note that the arrangement of the correct option and the incorrect options for the option 604 may be determined at the time of presenting the question in the question presenting device 103, or may be determined at the time of creating or updating the quiz.

[0031] The m + 1 answer buttons 605 are buttons for the user to select the option that the user believes is the correct answer. One answer button 605 is provided for one option.

[0032] (6) Quiz DB and User DB FIG. 7 shows an example of the quiz DB 215 and the user DB 216. The quiz DB 215 may include a quiz ID, a question text ID, a correct option ID, incorrect option IDs 1, 2, and an overall correct answer rate. In this example, it is assumed that there are two incorrect options, but this is just an example. The number of incorrect option IDs is the same as the number of incorrect selections included in the quiz. The quiz ID is identification information for distinguishing a plurality of quizzes. The question text ID is identification information for distinguishing a plurality of question texts (e.g., a pair of the problem text 602 and the explanatory text 603 of the phenomenon). The correct option ID is identification information indicating the correct option for the question text specified by the question text ID among the plurality of options registered in the option DB 218 in advance. The incorrect option IDs 1 and 2 are identification information indicating the incorrect options for the question text specified by the question text ID among the plurality of options registered in the option DB 218 in advance. The overall correct answer rate is the average value of the correct answer rates for a plurality of respondents for the question text specified by the question text ID.

[0033] The question text database 217 is a database that holds question text for each question text ID (e.g., a pair of problem statement 602 and description of the phenomenon 603). The option database 218 is a database that holds option text for each option ID (e.g., one-word phrase). In this example, for one option ID, three option texts of different difficulty levels are associated. Note that individual option IDs may be assigned to each of the three option texts of different difficulty levels. The question text database 217 and the option database 218 may be part of the quiz database 215.

[0034] Note that the question text may be associated with the knowledge registered in the failure case database 214. The option text may be associated with the one-word phrases registered in the failure case database 214. That is, the failure case database 214 holds failure case IDs, one-word phrases, and knowledge for distinguishing failure cases. Thereby, one-word phrases and knowledge can be extracted through the failure case IDs.

[0035] The user database 216 may include a user ID, a password, a quiz ID, and an individual correct answer rate. The user ID is unique identification information for distinguishing answerers. The password is a password for personal authentication. The quiz ID is the quiz ID held in the quiz database 215. The individual correct answer rate is the correct answer rate for each individual answerer for a certain question text. Note that the answer date may be held for each quiz ID. Note that the user ID, quiz ID, individual correct answer rate, and answer date may be stored and managed in the storage device 210 as quiz log data.

[0036] When the CPU 200 of the creation device 102 or the question - presenting device 103 detects that a specific user has logged in, it may refer to the user DB based on the user's ID and determine a single quiz ID. For example, the CPU 200 may identify a quiz ID for which no answer has been given yet (e.g., the correct - answer rate is 0%), or a quiz ID for which a predetermined time has elapsed since the previous answer. The CPU 200 accesses the question - text DB 217 based on the question - text ID associated with the quiz ID in the quiz DB 215 and obtains the question text. Further, the CPU 200 obtains the correct - answer option ID associated with the question - text ID by the quiz DB 215 and obtains the option text associated with the correct - answer option ID in the option DB 218. At this time, if multiple option texts classified by difficulty level are associated with the option ID, the CPU 200 determines one option text corresponding to the overall correct - answer rate or the personal correct - answer rate of that user. The CPU 200 obtains the incorrect - answer option IDs 1, 2 associated with the question - text ID by the quiz DB 215 and obtains the option texts associated with the incorrect - answer option IDs 1, 2 in the option DB 218. The CPU 200 creates a quiz screen 600 from this information.

[0037] (7) Functions of the CPU FIG. 8 shows the functions realized when the CPU 200 of the learning support device 101 (creation device 102) executes the creation program 212. The reception unit 801 receives a creation start instruction input by the question setter through the input device 202 or a creation start instruction output from the question device 103. The quiz creation unit 802 creates a multiple-choice quiz. The quiz creation unit 802 may include a question text selection unit 803, a correct answer rate acquisition unit 804, a difficulty determination unit 805, a correct answer selection unit 806, and an incorrect answer selection unit 807. The question text selection unit 803 randomly selects or selects a question text (e.g., question text ID, question text) based on the user ID. The correct answer rate acquisition unit 804 acquires the overall correct answer rate associated with the question text ID or the individual correct answer rate associated with the user ID. The difficulty determination unit 805 determines the difficulty based on the correct answer rate. At this time, a mathematical formula, threshold value, or program module for converting the correct answer rate into the difficulty may be used. The correct answer selection unit 806 randomly selects a correct answer option or selects a correct answer option corresponding to the correct answer rate or difficulty. The incorrect answer selection unit 807 randomly selects an incorrect answer option or selects an incorrect answer option corresponding to the correct answer rate or difficulty.

[0038] The generation unit 810 creates the quiz screen 600. For example, the generation unit 810 acquires quiz data (question text and option text) based on the quiz ID and generates screen data by arranging them in the template of the quiz screen 600. The generated screen data may be associated with the quiz ID. The screen data includes a template of an html file, a template of CSS data, and image data, etc.

[0039] FIG. 9 shows functions realized by the CPU 200 of the learning support device 101 (question presenting device 103) executing a question presenting program 213. The authentication unit 901 is optional and determines whether the user ID and password input by the user operating the user terminal 105 are registered in the user DB 216. The question presenting unit 902 selects one question from a plurality of questions registered in the quiz DB 215 and transmits display data (e.g., HTML file, etc.) for displaying the quiz screen 600 to the user terminal 105. The correct answer determination unit 903 determines whether the answer button 605 operated on the user terminal 105 is a button associated with the correct option. The question presenting unit 902 may display a correct answer screen on the user terminal 105 when the user selects the correct option. The question presenting unit 902 may display an incorrect answer screen on the user terminal 105 when the user selects an incorrect option. In this case, the question presenting unit 902 may repeatedly prompt the user to click the answer button 605 until the user selects the correct option. The correct answer rate recording unit 904 calculates the correct answer rate for each question and records it in the quiz DB 215. The correct answer rate may be managed for each user (individual correct answer rate). The correct answer rate may be managed for each user group consisting of a plurality of users (group correct answer rate). Alternatively, the correct answer rate may be managed as the correct answer rate for all users (overall correct answer rate).

[0040] (8) Specific examples of correct options FIG. 10 shows an example of a correct option. As the correct option for the question text 601, a correct option group 1001 is set in advance by the question presenter and stored in the option DB 218. The correct option group 1001 includes a plurality of correct options for the question text 601. In this example, three correct options are included.

[0041] The multiple correct answer options included in the correct answer option group 1001 may be hierarchically organized according to the difficulty level of the quiz. In this example, a three-level difficulty (high, medium, low) is illustrated. The upper correct answer option 1002 is the correct answer option corresponding to the difficulty level (high). The middle correct answer option 1003 is the correct answer option corresponding to the difficulty level (medium). The lower correct answer option 1004 is the correct answer option corresponding to the difficulty level (low). Specific examples of these correct answer options will be listed below.

[0042] (8-1) Specific Example 1 Phenomenon: "When I replied to an email from a regular business partner to everyone without checking the destination, I accidentally sent the email to an unintended recipient." Upper correct answer option 1002: "People get used to things, whether it's good or bad. People perform habitual tasks unconsciously." Middle correct answer option 1003: "Convenience and danger are two sides of the same coin. Auto-input is convenient, but one needs to be cautious." Lower correct answer option 1004: "The pitfalls hidden in replies. Unintended destinations may be included in reply emails." (8-2) Specific Example 2 Phenomenon: "After the storage test, the label floated and peeled off." Upper correct answer option 1002: "Parting ways due to the direction of force. Parts fall off depending on the direction of the force applied to the fixing part." Middle correct answer option 1003: "Stickers that are weak against peeling. Stickers are weak against the force in the peeling direction." Lower correct answer option 1004: "Stretched and peeled off. The label warps and peels off due to the tension during pasting." Note that the storage test is a test in which the lid of the box in which the product is packed is taped shut, the box is left for a predetermined period, and it is confirmed that the tape does not peel off.

[0043] In this way, the correct answer options may be stored in the option DB218 in advance for each difficulty level. Also, the higher the difficulty level, the more it will include educational implications of higher-level concepts. That is, the higher the difficulty level, the more educational implications common to more failure cases it will include.

[0044] (9) Flowchart (9-1) Quiz Creation Method FIG. 11 is a flowchart showing a quiz creation method executed by CPU 200 according to creation program 212.

[0045] In S1101, CPU 200 (question text selection unit 803) determines a question text from question text DB 217. As described above, for example, the question text may be determined randomly, or may be determined based on the answer history of the answerers held in user DB 216.

[0046] In S1102, CPU 200 (correct answer rate acquisition unit 804) acquires the past correct answer rate for the determined question text from quiz DB 215 or user DB 216.

[0047] In S1103, CPU 200 (difficulty determination unit 805) determines the difficulty corresponding to the acquired correct answer rate. Difficulty determination unit 805 may use a mathematical formula, threshold value, table, or program module that converts the correct answer rate into difficulty.

[0048] In S1104, CPU 200 (correct answer selection unit 806) determines the correct answer options according to the determined difficulty. As described above, option text (e.g., one-word phrase) corresponding to the difficulty may be selected from option DB 218.

[0049] In S1105, CPU 200 (incorrect answer selection unit 807) determines the incorrect answer options according to a random method or a difficulty method. For example, among the plurality of correct answer options held in option DB 218, another correct answer option not associated with the question text may be randomly determined as the incorrect answer option. Alternatively, the incorrect answer options may be determined according to the determined difficulty. More specifically, similar to the correct answer options, a plurality of incorrect answer options with different difficulties are held in option DB 218 in advance, and incorrect answer selection unit 807 may determine the incorrect answer options according to the correct answer rate, that is, according to the difficulty.

[0050] In S1106, the CPU 200 (generation unit 810) generates quiz data (screen data) including a question text, correct answer options, and incorrect answer options. For example, the generation unit 810 associates the question text (question text ID), correct answer options (option ID), and incorrect answer options (option ID) with the quiz ID and registers them in the quiz DB 215. In this way, the quiz data required to display the quiz screen 600 is created.

[0051] (9-2) Method for Determining Correct Answer Options FIG. 12 is a flowchart showing in detail the method for determining the correct answer options in S1104.

[0052] In S1201, the CPU 200 (correct answer selection unit 806) refers to the user DB 216 or the quiz DB 215 and determines whether there is an answer history for the question text. For example, based on the user ID of the logged-in user and the quiz ID, the past answer history of the user may be obtained from the user DB 216. For example, if the correct answer rate is 0%, it may be determined that there is no answer history. If the correct answer rate exceeds 0%, it may be determined that there is an answer history.

[0053] If it is determined that there is an answer history, the CPU 200 advances the process from S1201 to S1202. In S1202, the CPU 200 (correct answer selection unit 806) selects the correct answer option corresponding to the difficulty level obtained from the past correct answer rate. For example, if the past correct answer rate obtained from the user DB 216 is less than the first threshold value, the difficulty level is determined to be "low", and the option with the difficulty level (low) is selected as the correct answer option. If the past correct answer rate obtained from the user DB 216 exceeds the second threshold value, the difficulty level is determined to be "high", and the option with the difficulty level (high) is selected as the correct answer option. If the past correct answer rate is greater than or equal to the first threshold value and less than or equal to the second threshold value, the difficulty level is determined to be "medium", and the option with the difficulty level (medium) is selected as the correct answer option.

[0054] When it is determined that there is no answer history, the CPU 200 advances the process from S1201 to S1211. At S1211, the CPU 200 (correct answer selection unit 806) randomly selects a correct answer option.

[0055] (9-3) Questioning method FIG. 13 shows a questioning method executed by the CPU 200 according to the question program 213. The CPU 200 recognizes that the user terminal 105 has accessed the question device 103 according to the Web server program 211 and executes the following processes.

[0056] At S1301, the CPU 200 (authentication unit 901) refers to the user DB 216 based on the user ID and password received from the user terminal 105 and authenticates the user. If the user ID and password are normal, the CPU 200 advances the process from S1301 to S1302. If the user ID and password are not normal, the CPU 200 ends the questioning method.

[0057] At S1302, the CPU 200 (questioning unit 902) displays the quiz screen 600 on the output device 303 of the user terminal 105. The questioning unit 902 transmits the display data constituting the quiz screen 600 of any quiz registered in the quiz DB 215 to the user terminal 105 via the Web server program 211. Thereby, the CPU 300 of the user terminal 105 displays the quiz screen 600 on the output device 303 according to the answer program 311 (Web browser).

[0058] At S1303, the CPU 200 (correct answer determination unit 903) accepts the input of the answer from the user terminal 105.

[0059] At S1304, the CPU 200 (correct answer determination unit 903) refers to the quiz DB 215 based on the quiz ID associated with the quiz screen 600 to obtain the correct answer option and determines whether the answer given by the user is correct. If the answer given by the user is the correct answer option, the CPU 200 advances the process to S1205.

[0060] In S1305, the CPU 200 (correct answer determination unit 903) displays a correct answer message on the user terminal 105 via the Web server program 211. Then, the CPU 200 advances the process to S1306.

[0061] If the answer given by the user in S1304 is an incorrect option, the CPU 200 advances the process to S1311. In S1311, the CPU 200 (correct answer determination unit 903) displays an incorrect answer message on the user terminal 105 via the Web server program 211. Then, the CPU 200 advances the process to S1306. Note that the CPU 200 may advance the process to S1303 and accept the input of the answer again.

[0062] In S1306, the CPU 200 (correct answer rate recording unit 904) updates the correct answer rate by referring to the quiz DB 215 or the user DB 216 based on the quiz ID associated with the quiz screen 600. That is, the correct answer rate recording unit 904 reflects the answer result of this quiz in the correct answer rate R. R = C / Q ···Eq1 Here, C is the number of correct answers. Q is the number of questions. The quiz DB 215 holds the number of correct answers C and the number of questions Q for each quiz ID. Therefore, updating the correct answer rate R corresponds to updating the number of correct answers C and the number of questions Q. If the answer result of this time is correct, the correct answer rate R is updated as follows. R = (C + 1) / (Q + 1) ···Eq2 If the answer result of this time is incorrect, the correct answer rate R is updated as follows. R = C / (Q + 1) ···Eq3 Note that when the quiz DB 215 or the user DB 216 holds the number of correct answers C and the number of questions Q for each quiz ID, the correct answer rate R may be calculated when the correct answer rate R is required.

[0063] According to Example 1 in this way, the correct option and the incorrect options are determined based on the past correct answer rate. Therefore, the burden on the user to create quizzes is reduced, and it becomes possible to efficiently create multiple-choice quizzes. In particular, one correct option corresponding to the past correct answer rate is selected from a plurality of correct options with different levels of difficulty. Therefore, the learning efficiency of the answerer will be improved.

[0064] <Example 2> According to Example 1, not only the correct option but also the incorrect options are automatically determined, so the burden on the user is significantly reduced. However, the user (the question setter, administrator, or the supervisor of the answerer) may want to change either the correct option or the incorrect options. Therefore, Example 2 provides a method for the user to adjust at least one of the correct option and the incorrect options.

[0065] FIG. 14 is a flowchart showing a method for adjusting options that the CPU 200 executes according to the creation program 212. This adjustment method may be inserted, for example, between S1105 and S1106.

[0066] In S1401, the CPU 200 (quiz creation unit 802) displays the correct option and the incorrect options determined as the options of the quiz on the output device 203. For example, the quiz creation unit 802 may display the quiz screen 600 on the output device 203 as a preview screen.

[0067] Figure 15 shows an example of a preview screen 1500. The same reference numerals are assigned to the items common to the quiz screen 600 in the preview screen 1500. Note that, in order to distinguish between the correct answer options and the incorrect answer options, the CPU 200 may display the correct answer options in a first color (e.g., blue) and the incorrect answer options in a second color (e.g., red). Alternatively, as shown in Figure 15, the characters "correct answer option" and "incorrect answer option" may be displayed in association with each option. The confirmation button 1501 is a button that instructs not to change the options displayed on the preview screen 1500, that is, to confirm. The automatic adjustment button 1502 is a button that instructs to automatically change (adjust) the options displayed on the preview screen 1500. The manual adjustment button 1503 is a button that instructs to manually change (adjust) the options displayed on the preview screen 1500.

[0068] In S1402, the CPU 200 (quiz creation unit 802) determines whether to change the options. For example, when the automatic adjustment button 1502 or the manual adjustment button 1503 is pressed, the quiz creation unit 802 determines to change the options. In this case, the CPU 200 advances the process to S1403. When the confirmation button 1501 is pressed, the quiz creation unit 802 determines not to change the options and ends the option adjustment method.

[0069] In S1403, the CPU 200 (quiz creation unit 802) determines whether to manually change the options. For example, when the manual adjustment button 1503 is pressed, the quiz creation unit 802 determines to manually change the options. In this case, the CPU 200 advances the process to S1404.

[0070] In S1404, the CPU 200 displays a list of slogans (one-word phrases).

[0071] In S1405, the CPU 200 (quiz creation unit 802) selects the correct answer option according to the user operation.

[0072] In S1406, the CPU 200 (quiz creation unit 802) selects an incorrect answer option according to the user operation. When S1406 ends, the CPU 200 advances the process to S1401.

[0073] When the automatic adjustment button 1502 is pressed in S1403, the CPU 200 determines that the option is to be automatically changed. In this case, the CPU 200 advances the process to S1407.

[0074] In S1407, the CPU 200 (quiz creation unit 802) determines a slogan (one-word phrase) that becomes the correct answer option based on the difficulty level. Note that when not changing the correct answer option, the CPU 200 may skip S1307.

[0075] In S1408, the CPU 200 (quiz creation unit 802) determines a slogan (one-word phrase) that becomes the incorrect answer option. Then, the CPU 200 advances the process to S1401 and displays the changed option on the output device 203. In S1402, the user may instruct the CPU 200 whether to further change the option.

[0076] According to the second embodiment, the correct answer option or the incorrect answer option can be changed automatically or manually. As a result, more appropriate quizzes will be created.

[0077] <Embodiment 3> In the first embodiment, it has been described that the correct answer rate for each quiz is recorded in the quiz DB 215 or the user DB 216. Here, if the correct answer rate is too high or too low, the learning efficiency of the user will not increase. Therefore, the correct answer rate should fall within an appropriate range. Thus, the third embodiment provides a method for updating the correct answer option so that the correct answer rate falls within the range defined by the lower threshold Th1 and the upper threshold Th2.

[0078] FIG. 16 is a flowchart showing a method for determining the correct option that the CPU 200 executes according to the creation program 212. When the determination of the correct option is instructed through the input device 202, the CPU 200 executes the method for determining the correct option according to the creation program 212.

[0079] In S1601, the CPU 200 (quiz creation unit 802) obtains the correct answer rate (overall correct answer rate) of the quiz that is the target of determination from the quiz DB 215.

[0080] In S1602, the CPU 200 (quiz creation unit 802) determines whether the correct answer rate is less than the lower threshold Th1. If the correct answer rate is less than the lower threshold Th1, the CPU 200 advances the process from S1602 to S1603.

[0081] In S1603, the CPU 200 (quiz creation unit 802) decreases the difficulty level by one step. The current difficulty level may be held in the quiz DB 215. In this case, if the current difficulty level stored in the quiz DB 215 is L, the quiz creation unit 802 changes the difficulty level L to the difficulty level L-1.

[0082] In S1604, the CPU 200 (quiz creation unit 802) selects the correct option that is one step lower. For example, the quiz creation unit 802 selects a one-word phrase from the group of correct options corresponding to the difficulty level L-1.

[0083] In S1605, the CPU 200 (generation unit 810) rewrites the quiz data in the quiz DB 215 with the one-word phrase determined as the correct option.

[0084] On the other hand, if it is determined in S1602 that the correct answer rate is not less than the lower threshold Th1, the CPU 200 advances the process from S1602 to S1611.

[0085] In S1611, the CPU 200 (quiz creation unit 802) determines whether the correct answer rate exceeds the upper threshold value Th2. If the correct answer rate exceeds the upper threshold value Th2, the CPU 200 advances the process from S1611 to S1612. If the correct answer rate is equal to or higher than the lower threshold value Th1 and equal to or lower than the upper threshold value Th2, since it is not necessary to re-determine the correct option, the CPU 200 ends the re-determination method.

[0086] In S1612, the CPU 200 (quiz creation unit 802) increases the difficulty level by one step. If the current difficulty level is L, the quiz creation unit 802 changes the difficulty level L to the difficulty level L + 1.

[0087] In S1613, the CPU 200 (quiz creation unit 802) selects a correct option that is one step higher. For example, the quiz creation unit 802 selects a single-word phrase from the group of correct options corresponding to the difficulty level L + 1. Then, the CPU 200 advances from S1613 to S1605.

[0088] In S1605, the CPU 200 (generation unit 810) rewrites the quiz data in the quiz DB 215 with the single-word phrase determined as the correct option.

[0089] According to the third embodiment, the correct option is re-determined so that the correct answer rate falls within an appropriate range. Thereby, the learning efficiency of failure cases through quizzes will be further improved.

[0090] <Specific examples> (1) Example 1 Since the single-word phrase is a slogan that concisely represents knowledge, it suggests various failure cases. Also, the single-word phrase and the knowledge are sentences extracted by generalizing specific failure cases. Therefore, the single-word phrase and the knowledge may be ambiguous. Thus, several specific examples will be described below.

[0091] FIG. 17 is a diagram for explaining a lesson regarding a rating nameplate attached to an electronic device such as a printer or its case. The rating nameplate includes characters and numbers indicating the ratings (such as power consumption) of the electronic device. Also, the rating nameplate includes characters and marks for each destination region. For example, the CE mark is a mark proving that the product meets the standards of all EU member states. The CCC mark is a mark proving that the product imported into China meets the domestic technical standards of China.

[0092] The rating nameplate 1701 is a correct rating nameplate that includes the China RoHS mark 1703. The rating nameplate 1702 is an incorrect rating nameplate that does not include the China RoHS mark 1703. The phenomenon of this failure case is that "a printer with a rating nameplate lacking the China RoHS mark was shipped". The cause is as follows. When an operator tried to correct a character misprint on the rating nameplate using label creation software, the operator accidentally deleted the RoHS mark. The operator did not notice that the RoHS mark had been deleted and overwrote and saved the file of the rating nameplate. The countermeasure is that "an automatic image recognition system detects a rating nameplate lacking the China RoHS mark so that a rating nameplate lacking the China RoHS mark does not leak out".

[0093] From this failure case, as a one-word phrase, "the risk of increasing by trusting the mark" was obtained. Also, the following knowledge was obtained. Regarding the display of aggregates of various languages and marks, it is difficult for an operator to notice mistakes. The operator should pay attention to a list of numbers that is difficult for the operator to find meaning in, unfamiliar languages, and marks. The more complex the information is, the more difficult it is for the human eye to detect mistakes. Therefore, it should be confirmed that there are no mistakes by image recognition or the like.

[0094] (Case 2) Figure 18 is a diagram for explaining Case 2. The stirring sheets 1801 and 1802 are members for stirring the toner in the toner container in a developing device mounted on an electrophotographic image forming apparatus. A large number of stirring sheets 1801 and 1802 are loaded into the magazine 2200. The stirring sheets 1801 and 1802 each have four corners, and one of the corners is cut off. This is called the C surface. In Figure 18, the orientation of the stirring sheet 1801 is correct, but the orientation of the stirring sheet 1802 is incorrect. The phenomenon in this failure case is that "the operator could not assemble the supplied stirring sheet 1802 from the magazine 2200 into the product, and the production line stopped". The cause is as follows. In order for the operator to visually distinguish the front and back of the stirring sheets 1801 and 1802, the C surface shape was provided on the stirring sheets 1801 and 1802. However, even if the orientation of the stirring sheet 1802 was incorrect, the stirring sheet 1802 could be set into the magazine 2200. The countermeasure is that "the inner surface shape of the magazine 2200 was improved so that the operator could set the stirring sheets 1801 and 1802 into the magazine 2200 when the orientation of the C surface shape was correct".

[0095] From such failure cases, the one-word phrase "assembly error, common error, choice error" was extracted. The knowledge is as follows. The operator is likely to make an assembly mistake with two parts that look the same and parts with a difficult-to-discern orientation. Gears, rollers, springs, connectors, rollers, and sheets require attention. It is important to create product specifications and supply device specifications such that the product is assembled only with the correct parts and in the correct orientation.

[0096] (Case 3) FIG. 19 is a diagram for explaining Case 3. FIG. 19 mainly shows the vicinity of the discharge port of the printer 1900. The discharge roller pair 1901 discharges the sheet 1902 on which an image is formed to the outside of the printer 1900. The lever 1903 presses the sheet 1902 from above downward so that the sheet 1902 is stably discharged. The lever 1903 rotates about the rotation axis 1904. When the sheet P contacts the lever 1903, the lever 1903 rotates and the tip of the lever 1903 moves upward. When the discharge of the sheet 1902 is completed, the lever 1903 rotates in the reverse direction and returns to the standby position. Near the rear end of the lever 1903, a mortar plane 1905 for absorbing impact is arranged. Since the mortar plane 1905 is in a normal shape, the lever 1903 is in the ideal standby position indicated by the broken line. When the mortar plane 1905 is deformed due to aging, the lever 1903 is in the standby position shown by practice. In the latter case, the rear end of the sheet 1902 adheres to the lever 1903. When the subsequent sheet 1909 is discharged, the subsequent sheet 1909 pushes up the lever 1903. As a result, the tip of the lever 1903 rises, and the tip of the lever 1903 pushes out the sheet 1902.

[0097] Thus, the phenomenon is that "the rear end of the discharged sheet 1902 climbed onto the lever 1903 that presses the discharged sheet 1902, and the lever 1903 pushed out and dropped the sheet 1902." The cause is as follows. In order to reduce the sound generated when the lever 1903 returns to the standby position, a sponge (mortar plane 1905) is adopted. The mortar plane 1905 was crushed due to aging, and the standby position of the tip of the lever 1903 deviated from the proper position. The countermeasure is as follows. Ribs were added to the lever 1903. As a result, even if the mortar plane 1905 is crushed, the tip position of the lever 1903 is maintained at the proper position.

[0098] From such failure cases, the phrase "ineffective shock absorber" was extracted as a single phrase. The knowledge is as follows. Since the shock-absorbing member bends or collapses, the position of the end face of the shock-absorbing member changes. When the shock-absorbing member is subjected to repeated loads, the shock-absorbing member collapses or the shape of the shock-absorbing member changes. Therefore, members for alignment and members that bend, collapse, or wear down should not be adopted in principle.

[0099] In this way, multiple-choice quizzes are created from failure cases related to the manufacture of electronic devices. By having both new employees and experienced workers answer multiple-choice quizzes, they can learn from past failure cases and prevent failures.

[0100] <Other Embodiments> (1) Other Examples of User Terminals Figures 20 and 21 show other examples of the user terminal 105. In this example, the storage device 310 of the user terminal 105 has the creation program 212, the question-posing program 213, the failure case DB 214, and the quiz DB 215 distributed from the learning support device 101. The CPU 300 executes the creation program 212 and the question-posing program 213 instead of the CPU 200. In this way, the user terminal 105 may operate as a stand-alone learning support device 101.

[0101] As shown in Figure 21, the failure case DB 214 may be held in the learning support device 101 that functions as a database server. In this case, the CPU 300 accesses the failure case DB 214 via the network to obtain failure cases. In this case, the user terminal 105 functions as a client.

[0102] (2) Production Method of Learning Support System Figure 22 shows a method in which the user terminal 105, which is a client, accesses the learning support device 101, which is a server, and the user terminal 105 sends data and instructions necessary for creating a quiz to the learning support device 101. That is, Figure 22 shows a production method of the learning support system 100. In this case, the learning support device 101 has a creation program 212, a question program 213, a failure case DB 214, and a quiz DB 215.

[0103] In S2201, the CPU 300 accesses the learning support device 101 and uploads failure cases to the failure case DB 214. For example, a plurality of failure cases and a plurality of lessons obtained from each of the plurality of failure cases may be uploaded.

[0104] In S2202, the CPU 300 sends a sentence (e.g., any one of a phenomenon, a cause, and a countermeasure) that becomes a question text input through the input device 302 to the learning support device 101.

[0105] In S2203, the CPU 300 causes the learning support device 101 to determine a one-word phrase (slogan) that becomes a correct answer option. For example, the CPU 300 sends a request for instructing the determination of the correct answer option to the learning support device 101. The method for determining the correct answer option is as already described.

[0106] In S2204, the CPU 300 causes the learning support device 101 to determine a slogan that becomes an incorrect answer option. For example, the CPU 300 sends a request for instructing the determination of the incorrect answer option to the learning support device 101. The method for determining the incorrect answer option is as already described.

[0107] In S2205, the CPU 300 causes the learning support device 101 to create quiz data including a correct answer option and an incorrect answer option. For example, the CPU 300 sends a request for instructing the creation of quiz data to the learning support device 101. As a result, the quiz data is registered in the quiz DB 215.

[0108] (3) Method of Answering FIG. 23 is a flowchart showing a method of answering executed on the user terminal 105. The CPU 300 executes the following processes according to the answer program 311.

[0109] In S2301, the CPU 300 accesses the quiz DB 215 of the learning support device 101 and acquires a multiple-choice quiz (quiz data). The quiz includes one lesson that is the correct option and one or more lessons that are incorrect options.

[0110] In S2302, the CPU 300 displays the multiple-choice quiz on the output device 303. The output device 303 may display, for example, the quiz screen 600.

[0111] In S2303, the CPU 300 accepts an answer input (selection of an option) from the user through the input device 302. The answer may be the identification information of the option. The input of the answer may be realized by operating a button corresponding to the option.

[0112] In S2304, the CPU 300 transmits the answer input through the input device 302 to the learning support device 101.

[0113] In S2305, the CPU 300 receives the answer result from the learning support device 101. The answer result includes result information indicating correct or incorrect.

[0114] In S2306, the CPU 300 displays the answer result received from the learning support device 101 on the output device 303.

[0115] <Technical idea derived from the embodiment> [Item 1] A learning support device for creating a multiple-choice quiz, quiz storage means for storing a plurality of question texts and, for each of the plurality of question texts, a plurality of correct options with different levels of difficulty; correct answer rate storage means for storing the past correct answer rate for each of the plurality of question texts; Selection means for selecting one question sentence from the plurality of question sentences stored in the quiz storage means; Creation means for determining, from among the plurality of correct answer options, a correct answer option having a difficulty level corresponding to the past correct answer rate stored in the correct answer rate storage means for the selected one question sentence, and creating a multiple-choice quiz including the one question sentence and the correct answer option having a difficulty level corresponding to the past correct answer rate; A learning support device having the above.

[0116] The storage device 210, the quiz DB 215, and the user DB 216 are examples of the quiz storage means and the correct answer rate storage means. The CPU 200, the quiz creation unit 802, and the question sentence selection unit 803 are examples of the selection means. The CPU 200, the quiz creation unit 802, and the correct answer selection unit 806 are examples of the creation means. According to the present embodiment, for each of the plurality of question sentences, a plurality of correct answer options having different difficulty levels are prepared in advance, and the correct answer option is determined according to the past correct answer rate. Thereby, a learning support device that creates a multiple-choice quiz capable of further enhancing the learning effect is provided.

[0117] [Item 2] The plurality of correct answer options include a correct answer option of a first difficulty level and a correct answer option of a second difficulty level lower than the first difficulty level. The learning support device according to item 1, wherein the correct answer option of the first difficulty level includes an educational suggestion that is a superordinate concept of the correct answer option of the second difficulty level.

[0118] For example, the difficulty level L+1 is an example of the first difficulty level. The difficulty level L is an example of the second difficulty level. As described above, the correct answer option with a higher difficulty level and the correct answer option with a lower difficulty level are prepared as correct answer options for the same question sentence. Here, the correct answer option with a high difficulty level is determined as an educational suggestion common to a plurality of failure cases, and the failure case with a low difficulty level is often determined as a chest-style suggestion for a specific failure case. Therefore, the correct answer option with a high difficulty level includes an educational suggestion that is a superordinate concept of the correct answer option with a low difficulty level.

[0119] [Item 3] The plurality of correct options further includes correct options with a third level of difficulty lower than the second level of difficulty The learning support device according to item 2, wherein the correct options with the second level of difficulty include educational implications that are superordinate concepts of the correct options with the third level of difficulty.

[0120] Difficulty level L-1 is an example of the third level of difficulty. The correct options with difficulty level L may include educational implications that are superordinate concepts of the correct options with difficulty level L-1.

[0121] [Item 4] If the past correct answer rate is not yet stored in the correct answer rate storage means for the selected single question sentence, the creating means randomly determines one correct option from the plurality of correct options with different levels of difficulty prepared in advance for the selected single question sentence. The learning support device according to any one of items 1 to 3.

[0122] As described with reference to FIG. 7, the user DB 216 can store the correct answer rate for each quiz, that is, for each question sentence. Here, if a certain quiz has not been presented, the correct answer rate is not stored. Therefore, the fact that the correct answer rate is not stored may be determined as meaning that the quiz has not been presented. In addition, even if a NULL (null) character is stored instead of the correct answer rate, it may be determined that the quiz has not been presented.

[0123] [Item 5] The quiz storage means further stores a plurality of incorrect options with different levels of difficulty for each of the plurality of question sentences The creating means determines incorrect options with a level of difficulty corresponding to the past correct answer rate stored in the correct answer rate storage means for the selected single question sentence from among the plurality of incorrect options, and includes the incorrect options with a level of difficulty corresponding to the past correct answer rate in the single-choice quiz. The learning support device according to any one of items 1 to 4.

[0124] As mentioned in relation to FIG. 7, the quiz DB 215 and the option DB 218 may store a plurality of incorrect options. In this case, the incorrect option selection unit 807 may determine incorrect options with a difficulty level according to the past correct answer rate from among the plurality of incorrect options stored in the quiz DB 215 and the option DB 218.

[0125] [Item 6] The quiz storage means further stores a plurality of incorrect options for each of the plurality of questions, The creation means randomly determines one or more incorrect options to be included in the multiple-choice quiz from among the plurality of incorrect options stored for the selected one question, in the learning support device according to any one of Items 1 to 5.

[0126] The quiz DB 215 and the option DB 218 may store a plurality of incorrect options that are independent of or associated with the difficulty level. The incorrect option selection unit 807 may randomly select one or more incorrect options from among the plurality of incorrect options. Note that the plurality of incorrect options may be held in association with a specific question. Alternatively, among the plurality of options stored in the quiz DB 215 and the option DB 218, other options that are not the correct option for a specific question may be used as the plurality of incorrect options.

[0127] [Item 7] further having authentication means for authenticating a respondent, The learning support device according to any one of Items 1 to 6, wherein the correct answer rate is the individual correct answer rate of the respondent authenticated by the authentication means.

[0128] As described in relation to FIG. 7, the correct answer rate used for selecting the correct option or the incorrect option may be the individual correct answer rate.

[0129] [Item 8] The learning support device according to any one of Items 1 to 7, wherein the correct answer rate is the average correct answer rate for a plurality of respondents to the same question sentence.

[0130] As described in connection with FIG. 7, the correct answer rate used to select the correct option or the incorrect option may be the overall correct answer rate that is the average correct answer rate for a plurality of respondents.

[0131] [Item 9] The plurality of question sentences are question sentences for learning a failure case and a lesson obtained from the failure case, The learning support device according to any one of Items 1 to 8, wherein the correct option includes a lesson obtained from the failure case.

[0132] The failure phenomenon, cause, countermeasure, one-word phrase, knowledge, and tag information stored in the failure case DB 214 are examples of the failure cases and lessons stored in the storage means. Since the options are determined based on the past correct answer rate in this way, a quiz with high learning efficiency will be generated.

[0133] [Item 10] The plurality of lessons include knowledge including at least one of a failure phenomenon extracted in advance from a failure case, the cause of the failure, and the countermeasure against the failure, and a slogan that simply represents the knowledge. The learning support device according to any one of Items 2 to 9.

[0134] The one-word phrase is an example of a slogan that simply represents knowledge. Generally, the one-word phrase includes an educational suggestion that the user will learn from the failure case. Therefore, by learning the one-word phrase, the user will be able to prevent similar failures.

[0135] [Item 11] The learning support device according to Item 10, wherein the question sentence includes an explanatory text that explains the failure phenomenon.

[0136] As illustrated in FIG. 6, the question sentence may include a sentence that explains the phenomenon. As a result, the user will be able to capture the failure from the perspective of the phenomenon and learn. Note that instead of the phenomenon of failure, the cause of failure may be adopted. Instead of the phenomenon of failure, the countermeasure against failure may be adopted.

[0137] [Item 12] The question sentence is the learning support device described in Item 10 or 11 that includes an explanatory text that explains the cause of failure.

[0138] The quiz screen 600 may include an explanatory text that explains the cause of failure as a question sentence. As a result, the user will be able to capture the failure from the perspective of the cause and learn.

[0139] [Item 13] The question sentence is the learning support device described in any one of Items 10 to 12 that includes an explanatory text that explains the countermeasure against failure.

[0140] The quiz screen 600 may include an explanatory text that explains the countermeasure against failure as a question sentence. As a result, the user will be able to capture the failure from the perspective of the countermeasure and learn.

[0141] [Item 14] The lesson includes knowledge including at least one of the phenomenon of failure, the cause of the failure, and the countermeasure against the failure extracted in advance from the failure case, a slogan that represents the knowledge simply, and tag information including a plurality of keywords related to the failure, and is the learning support device described in any one of Items 10 to 13.

[0142] As illustrated in FIG. 4, the lesson may include knowledge, a slogan, and tag information.

[0143] [Item 15] Each of the plurality of failure cases is the learning support device described in any one of Items 10 to 14 that includes an explanatory text of the phenomenon that becomes the failure case.

[0144] [Item 16] The learning support device according to any one of items 10 to 15, wherein each of the plurality of failure cases includes a description of the phenomenon that is the failure case and a description of the cause that brings about the phenomenon.

[0145] [Item 17] The learning support device according to any one of items 10 to 16, wherein each of the plurality of failure cases includes a description of the phenomenon that is the failure case, a description of the cause that brings about the phenomenon, and a description of a countermeasure for suppressing the occurrence of the phenomenon.

[0146] [Item 18] The learning support device according to any one of items 2 to 17, wherein the creating means determines one lesson as the correct option from the past correct answer rates and determines one or more lessons other than the correct option as incorrect options.

[0147] The quiz creation unit 802 selects, as the correct option, a lesson among a plurality of lessons according to the past correct answer rates. Further, the quiz creation unit 802 may select, as incorrect options, one or more lessons among the plurality of lessons other than the correct option. Thereby, it is not necessary to specially prepare incorrect options, and the work burden on the question setter will be reduced.

[0148] [Item 19] The learning support device according to item 18, wherein the creating means randomly determines one or more lessons other than the correct option as the incorrect options.

[0149] The incorrect answer selection unit 807 may select, as incorrect options, one or more lessons among a plurality of lessons other than the correct option by a random method.

[0150] Note that high difficulty, medium difficulty, and low difficulty are examples of parameters used to select the correct option or incorrect options. By determining the correct option in consideration of the difficulty in this way, quizzes corresponding to the user's learning achievement level will be created.

[0151] Using a threshold value, a lesson that becomes the correct option may be selected. The threshold value for distinguishing high difficulty and medium difficulty may be set at a correct answer rate of 80%. Also, the threshold value for distinguishing medium difficulty and low difficulty may be set at a correct answer rate of 30%. In the case of a correct answer rate lower than 30%, by selecting a lesson at a lower level, a correct option with a low difficulty level will be selected.

[0152] [Item 20] The plurality of correct options include n correct options that correspond one-to-one to n levels of difficulty (n is an integer of 2 or more), The creating means, When the past correct answer rate obtained for the correct option of the i-th level of difficulty is less than the lower threshold value, the correct option of the (i - 1)-th level of difficulty is determined as the new correct option for the one question text (i is an integer of 2 or more and n - 1 or less), When the past correct answer rate obtained for the correct option of the i-th level of difficulty exceeds the upper threshold value, the correct option of the (n + 1)-th level of difficulty is determined as the new correct option for the one question text. The learning support device according to any one of Items 1 to 19.

[0153] Here, when n levels of difficulty are defined, for one question text, n correct options are prepared. This will reduce the computational burden associated with the selection of the correct option selection unit 806. However, a plurality of correct options may be provided for a pair of one question and one level of difficulty. For example, a plurality of correct options may be provided for one question text. In this case, the correct option selection unit 806 will determine one option from among the plurality of options of the same level of difficulty based on a random method or the like.

[0154] [Item 21] Recording means for recording the correct answer rate for the multiple-choice quiz, Redetermining means for redetermining the correct option included in the multiple-choice quiz according to the correct answer rate, The learning support device according to any one of Items 1 to 20, further comprising.

[0155] The CPU 200 and the correct answer rate recording unit 904 are examples of the recording means. The CPU 200 and the quiz creation unit 802 are examples of the re-determination means. By re-determining the correct option according to the correct answer rate in this way, the quiz may be improved.

[0156] The quiz may include the first lesson as the correct option. When the correct answer rate is lower than the first appropriate correct answer rate, the quiz creation unit 802 may determine a second lesson with a lower difficulty level than the correct option as the correct option in place of the first lesson. When the correct answer rate is higher than the second appropriate correct answer rate, the quiz creation unit 802 may determine a third lesson with a higher difficulty level than the correct option as the correct option in place of the first lesson.

[0157] As shown in FIG. 16, the lower threshold Th1 is an example of the first appropriate correct answer rate. The upper threshold Th2 is an example of the second appropriate correct answer rate. Thus, the quiz will be improved so that the correct answer rate falls within the appropriate range.

[0158] [Item 22] First display means for displaying one lesson that becomes the correct option determined by the creation means; Inquiry means for inquiring of the questioner whether to change the one lesson determined as the correct option by the creation means to another lesson; Second display means for displaying, in a selectable manner for the questioner, one or more lessons that were not determined as the correct option among the plurality of lessons as the other lesson when it is selected to change the one lesson to another lesson; and further having The creation means is A learning support device according to any one of Items 10 to 21, which determines, as the correct option, one lesson selected as the other lesson from among the one or more lessons displayed by the second display means.

[0159] The CPU 200, the preview screen 1500, and the output device 203 may display one lesson that is the correct option. The CPU 200, the preview screen 1500, and the output device 203 may also inquire of the question setter whether to change one lesson determined as the correct option to another lesson. When it is selected to change one lesson to another lesson, the CPU 200 and the output device 203 may display one or more lessons that were not determined as the correct option among the plurality of lessons so that the question setter can select them as another lesson. The CPU 200 and the quiz creation unit 802 may determine one lesson selected as another lesson among the one or more displayed lessons as the correct option. If there is little information stored in the failure case DB 214 or inappropriate information is registered, there is a possibility that an appropriate correct option will not be selected. In this case, the user (question setter) may manually determine the correct option or cause the CPU 200 to re-determine the correct option.

[0160] [Item 23] first display means for displaying one lesson that is the correct option determined by the creation means; inquiry means for inquiring of the question setter whether to change one or more lessons determined as incorrect options by the creation means to another lesson; second display means for, when it is selected to change the one or more lessons to the another lesson, displaying one or more lessons that were not determined as the correct option among the plurality of lessons so that the question setter can select them as the another lesson; and further having the creation means The learning support device according to any one of Items 10 to 22, wherein one or more lessons selected as the another lesson among the one or more lessons displayed by the second display means are determined as the incorrect options.

[0161] The CPU 200, the preview screen 1500, and the output device 203 may inquire the questioner whether to change one or more lessons determined as incorrect options to another lesson. When it is selected to change one or more lessons to another lesson, the CPU 200, the preview screen 1500, and the output device 203 may display one or more lessons that were not determined as correct options among the plurality of lessons so that the questioner can select them as another lesson. The CPU 200 and the quiz creation unit 802 may determine one or more lessons selected as another lesson among the displayed one or more lessons as incorrect options.

[0162] The CPU 200 of the question device 103, the web server program 211, the question section 902, and the quiz screen 600 are examples of display means. The CPU 200, the question section 902, and the answer button 605 are examples of selection means. The CPU 200 and the correct answer determination unit 903 are examples of correct answer determination means.

[0163] [Item 25] A program for causing a computer to present a multiple-choice quiz, the program causing the computer to function as the learning support device described in any one of Items 1 to 24. The creation program 212 and the question program 213 are examples of a program for causing a computer to present a multiple-choice quiz.

[0164] [Item 26] A learning support method for creating a multiple-choice quiz, storing a plurality of question texts and a plurality of correct answer options with different difficulty levels for each of the plurality of question texts in quiz storage means, storing the past correct answer rate for each of the plurality of question texts in correct answer rate storage means, selecting one question text from the plurality of question texts stored in the quiz storage means, Determine a correct answer option with a difficulty level corresponding to the past correct answer rate stored in the correct answer rate storage means for the selected one question text from among the plurality of correct answer options, and create a multiple-choice quiz including the one question text and the correct answer option with a difficulty level corresponding to the past correct answer rate. A learning support method having this.

[0165] In this way, a learning support method may be provided as information processing executed by a computer's processor (CPU200).

[0166] [Item 27] A learning support system having a first information processing device that creates a multiple-choice quiz and a second information processing device that presents the quiz, The first information processing device Has a quiz storage means for storing a plurality of question texts and a plurality of correct answer options with different difficulty levels for each of the plurality of question texts, A correct answer rate storage means for storing the past correct answer rate for each of the plurality of question texts, A selection means for selecting one question text from the plurality of question texts stored in the quiz storage means, Determine a correct answer option with a difficulty level corresponding to the past correct answer rate stored in the correct answer rate storage means for the selected one question text from among the plurality of correct answer options, and create a multiple-choice quiz including the one question text and the correct answer option with a difficulty level corresponding to the past correct answer rate. And has The second information processing device Has a display means for displaying the one question text and for displaying a plurality of selectable options including the correct answer option, A reception means for receiving the selection of an option to be the answer by the respondent from among the plurality of options displayed by the display means, A determination means for determining whether or not the option to be the answer is the correct answer option, A learning support system having this.

[0167] The creation device 102 is an example of a first information processing device. The question device 103 or the user terminal 105 is an example of a second information processing device.

[0168] [Item 28] The first information processing device a recording means for recording the correct answer rate for the one question sentence based on the determination result by the determination means; a re-determination means for re-determining the correct answer option included in the quiz according to the correct answer rate; The learning support system according to item 27, further comprising:

[0169] A learning support device for creating a multiple-choice quiz, a storage means for storing, as an example pair, knowledge including at least one of a failure phenomenon extracted in advance from a failure case, the cause of the failure, and the countermeasure against the failure, and a slogan representing the knowledge simply; a reception means for receiving an input of a sentence to be a question sentence in the multiple-choice quiz; a determination means for determining, based on a past correct answer rate, one slogan to be a correct answer option and one or more slogans to be incorrect answer options in the multiple-choice quiz; A learning support device, comprising:

[0170] The storage device 210 is an example of a storage means. The reception unit 801, the input device 202, and the CPU 200 are examples of the reception means. The CPU 200 and the quiz creation unit 802 are examples of the determination means. According to this embodiment, since one lesson to be a correct answer option and one or more lessons to be incorrect answer options are determined based on a past correct answer rate, a multiple-choice quiz is generated efficiently. Thereby, the burden on the user associated with the creation of the quiz is reduced.

[0171] A display method for displaying, on a display device of a client, a screen for creating a multiple-choice quiz in a server, causing the display device to display an input screen of a sentence to be a question sentence in the multiple-choice quiz; the text received through the input screen, causing the display device to display a display screen that displays one lesson that is the correct option and one or more lessons that are incorrect options in the multiple-choice quiz determined based on the past correct answer rate, A display method comprising:

[0172] As shown in FIG. 5, the input screen 500 is an example of a quiz start screen in a multiple-choice quiz. FIG. 14 illustrates a display screen that displays one lesson that is the correct option and one or more lessons that are incorrect options in the multiple-choice quiz determined based on the past correct answer rate. Note that the learning support device 101 and the creation device 102 are examples of a server. The user terminal 105 is an example of a client. The output device 303 is an example of a display device. The learning support device 101 transmits instructions (e.g., HTML files, CSS files, scripts, image data, etc.) for displaying these screens to the user terminal 105. Thereby, the learning support device 101 uses the user terminal 105 as its hands and feet.

[0173] A display device that displays a multiple-choice quiz created on a server, wherein the server has a storage means for storing in advance a plurality of failure cases and a plurality of lessons obtained from each of the plurality of failure cases, a reception means for receiving an input of a text that becomes a question sentence in the multiple-choice quiz, and a determination means for determining, based on the past correct answer rate, one lesson that is the correct option and one or more lessons that are incorrect options in the multiple-choice quiz. The display device includes: an acquisition means for accessing the server and acquiring the multiple-choice quiz including one lesson that is the correct option and one or more lessons that are incorrect options; a display means for displaying the multiple-choice quiz; an input means for receiving a selection of an option as an answer to the multiple-choice quiz; a transmission means for transmitting the identification information of the option received by the input means to the server; Receiving means for receiving from the server a result indicating whether the answer is correct or incorrect with respect to the answer; A display device having

[0174] The user terminal 105 may function as a display device (client) by executing the answering method shown in FIG. 22.

[0175] The invention is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, claims are appended to disclose the scope of the invention.

Explanation of Reference Numerals

[0176] 101: Learning support device, 210: Storage device, 202: Input device, 201: CPU

Claims

1. A learning support device for creating multiple-choice quizzes, comprising: quiz storage means for storing a plurality of question texts and, for each of the plurality of question texts, a plurality of correct answer options having different levels of difficulty; correct answer rate storage means for storing the past correct answer rate for each of the plurality of question texts; selection means for selecting one question text from the plurality of question texts stored in the quiz storage means; creation means for determining, from among the plurality of correct answer options, a correct answer option having a level of difficulty corresponding to the past correct answer rate stored in the correct answer rate storage means for the selected one question text, and creating a multiple-choice quiz including the one question text and the correct answer option having a level of difficulty corresponding to the past correct answer rate; A learning support device having the above.

2. The plurality of correct answer options include a correct answer option of a first level of difficulty and a correct answer option of a second level of difficulty lower than the first level of difficulty, The learning support device according to claim 1, wherein the correct answer option of the first level of difficulty includes an educational suggestion that is a superordinate concept of the correct answer option of the second level of difficulty.

3. The plurality of correct answer options further include a correct answer option of a third level of difficulty lower than the second level of difficulty, The learning support device according to claim 2, wherein the correct answer option of the second level of difficulty includes an educational suggestion that is a superordinate concept of the correct answer option of the third level of difficulty.

4. If the past correct answer rate is not yet stored in the correct answer rate storage means for the selected one question text, the creation means randomly determines one correct answer option from among the plurality of correct answer options having different levels of difficulty prepared in advance for the selected one question text. The learning support device according to claim 1.

5. The quiz storage means further stores, for each of the plurality of question texts, a plurality of incorrect answer options having different levels of difficulty, The creation means determines, from among the plurality of incorrect answer options, an incorrect answer option having a level of difficulty corresponding to the past correct answer rate stored in the correct answer rate storage means for the selected one question text, and includes the incorrect answer option having a level of difficulty corresponding to the past correct answer rate in the multiple-choice quiz. The learning support device according to claim 1.

6. The quiz storage means further stores a plurality of incorrect answer options for each of the plurality of question texts, The learning support device according to claim 1, wherein the creation means randomly determines one or more incorrect answer options to be included in the multiple-choice quiz from the multiple incorrect answer options stored for the selected one question text.

7. further comprising authentication means for authenticating an answerer, The learning support device according to claim 1, wherein the correct answer rate is the individual correct answer rate of the answerer authenticated by the authentication means.

8. The learning support device according to claim 1, wherein the correct answer rate is the average correct answer rate for a plurality of answerers for the same question text.

9. The plurality of question texts are question texts for learning a failure case and a lesson obtained from the failure case, The learning support device according to claim 1, wherein the correct answer option includes a lesson obtained from the failure case.

10. The learning support device according to claim 9, wherein the lesson includes knowledge including at least one of a failure phenomenon extracted in advance from a failure case, the cause of the failure, and a countermeasure against the failure, and a slogan that simply represents the knowledge.

11. The learning support device according to claim 10, wherein the question text includes an explanatory text that explains a failure phenomenon.

12. The learning support device according to claim 10, wherein the question text includes an explanatory text that explains the cause of the failure.

13. The learning support device according to claim 10, wherein the question text includes an explanatory text that explains a countermeasure against the failure.

14. The learning support device according to claim 9, wherein the lesson includes knowledge including at least one of a failure phenomenon extracted in advance from a failure case, the cause of the failure, and a countermeasure against the failure, a slogan that simply represents the knowledge, and tag information including a plurality of keywords related to the failure.

15. The learning support device according to claim 9, wherein each of the failure cases includes an explanatory text of a phenomenon that becomes a failure case.

16. The learning support device according to claim 9, wherein each of the failure cases includes an explanatory text of a phenomenon that becomes a failure case and an explanatory text of a cause that brings about the phenomenon.

17. The learning support device according to claim 9, wherein each of the failure cases includes an explanatory text of a phenomenon that becomes a failure case, an explanatory text of a cause that brings about the phenomenon, and an explanatory text of a countermeasure for suppressing the occurrence of the phenomenon.

18. The learning support device according to claim 2, wherein the creation means determines one lesson as the correct answer option from the past correct answer rate and determines one or more lessons other than the correct answer option as incorrect answer options.

19. The learning support device according to claim 18, wherein the creation means randomly determines one or more lessons other than the correct option as the incorrect options.

20. The plurality of correct options include n correct options that correspond one-to-one to n levels of difficulty (n is an integer of 2 or more), The creation means, when the past correct answer rate obtained for the correct option of the i-th level of difficulty is less than the lower threshold value, determines the correct option of the (i - 1)-th level of difficulty as the new correct option for the one question sentence (i is an integer of 2 or more and n - 1 or less), The learning support device according to claim 1, wherein when the past correct answer rate obtained for the correct option of the i-th level of difficulty exceeds the upper threshold value, determines the correct option of the (n + 1)-th level of difficulty as the new correct option for the one question sentence.

21. recording means for recording the correct answer rate for the multiple-choice quiz; redetermination means for redetermining the correct option included in the multiple-choice quiz according to the correct answer rate; The learning support device according to claim 1, further comprising.

22. first display means for displaying one lesson that becomes the correct option determined by the creation means; inquiry means for inquiring the question setter whether to change the one lesson determined as the correct option by the creation means to another lesson; second display means for, when it is selected to change the one lesson to another lesson, displaying one or more lessons among the multiple lessons that were not determined as the correct option in a selectable manner to the question setter as the other lesson, and The creation means, The learning support device according to claim 2, wherein the creation means determines one lesson selected as the other lesson among the one or more lessons displayed by the second display means as the correct option.

23. first display means for displaying one lesson that becomes the correct option determined by the creation means; inquiry means for inquiring the question setter whether to change one or more lessons determined as incorrect options by the creation means to another lesson; second display means for, when it is selected to change the one or more lessons to another lesson, displaying one or more lessons among the multiple lessons that were not determined as the correct option in a selectable manner to the question setter as the other lesson, and The creation means, The learning support device according to claim 2, wherein one or more lessons selected as the other lesson among the one or more lessons displayed on the second display means are determined as the incorrect answer options.

24. Display means for displaying the one question sentence and selectively displaying a plurality of options including one lesson determined as the correct answer option and one or more lessons determined as incorrect answer options by the creation means; Receiving means for receiving a selection of an option to be an answer by a respondent from among the plurality of options displayed by the display means; Correct answer determination means for determining whether the option to be the answer is the correct answer option; The learning support device according to claim 2, further comprising:

25. A program for causing a computer to present a multiple-choice quiz, the program causing the computer to function as the learning support device according to any one of claims 1 to 24.

26. A learning support method for creating a multiple-choice quiz, Storing a plurality of question sentences and a plurality of correct answer options with different levels of difficulty for each of the plurality of question sentences in a quiz storage means; Storing the past correct answer rate for each of the plurality of question sentences in a correct answer rate storage means; Selecting one question sentence from among the plurality of question sentences stored in the quiz storage means; Determining a correct answer option with a difficulty level corresponding to the past correct answer rate stored in the correct answer rate storage means for the selected one question sentence from among the plurality of correct answer options, and creating a multiple-choice quiz including the one question sentence and the correct answer option with a difficulty level corresponding to the past correct answer rate; A learning support method comprising:

27. A learning support system having a first information processing device for creating a multiple-choice quiz and a second information processing device for presenting the quiz, The first information processing device includes: Quiz storage means for storing a plurality of question sentences and a plurality of correct answer options with different levels of difficulty for each of the plurality of question sentences; Correct answer rate storage means for storing the past correct answer rate for each of the plurality of question sentences; Selection means for selecting one question sentence from among the plurality of question sentences stored in the quiz storage means; Creation means for creating a multiple-choice quiz including the one question text and the correct answer option with a difficulty level corresponding to the past correct answer rate stored in the correct answer rate storage means for the selected one question text, from among the plurality of correct answer options, having The second information processing device display means for displaying the one question text and for displayably selecting a plurality of options including the correct answer option, reception means for receiving selection of an option to be an answer by a respondent from among the plurality of options displayed by the display means, determination means for determining whether or not the option to be the answer is the correct answer option, A learning support system having

28. The first information processing device recording means for recording the correct answer rate for the one question text based on the determination result by the determination means, redetermination means for redetermining the correct answer option included in the quiz according to the correct answer rate, The learning support system according to claim 27, further having

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