Teaching aid for addition and subtraction teaching of primary school mathematics

Abstract

The utility model discloses a teaching aid for addition and subtraction teaching in primary school mathematics, which belongs to the technical field of auxiliary equipment for education and teaching and comprises a plurality of cylinders for addition and subtraction teaching in primary school mathematics, the cylinders are uniformly divided into four colors for identification, and the end parts of the cylinders are connected with fixing holes convenient for connection during mathematical calculation in a sliding manner. The fixing hole is formed in the top of the storage plate; the box body is internally provided with a movable groove facilitating connection, the inner wall of the movable groove is slidably connected with the side wall of the storage plate, and the top of the storage plate is provided with a paraphrasing plate used for assisting decimal mathematics teaching; the box cover is hinged to the box body through a hinge, a lower lock catch and an upper lock catch are arranged on the same side of the box body and the same side of the box cover respectively, and the upper lock catch is connected with the lower lock catch. The decimal addition and subtraction teaching aid not only can flexibly teach decimal addition and subtraction of primary school mathematics, but also can help students to quickly grasp decimal knowledge through colors and paraphrases, and the practicability of the decimal addition and subtraction teaching aid is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of educational teaching auxiliary equipment, in particular to a teaching aid for elementary school mathematics addition and subtraction teaching. Background Art

[0002] Teaching aids generally refer to "a general term for models, objects, charts and slides used to explain something during teaching", and are mainly used as teaching aids. Existing teaching aids for primary school mathematics teaching generally have multiple functions set on them to improve their flexibility and attractiveness, which are convenient for demonstration and operation. However, this device uses geometric rubber bands to demonstrate and teach the thorns connected to the bottom plate. Because the structure of the thorns themselves is fixed, students' hands-on ability is not high during mathematics education and teaching activities, so the degree of participation is not high. In addition, when performing decimal addition and subtraction mathematical operations, students cannot quickly understand and master the corresponding knowledge points, which reduces the practicality of the device.

[0003] After searching, for example (authorization announcement number CN215068800U) a teaching aid for elementary school mathematics addition and subtraction, including a main measuring rod, a disk body, a card slot is opened inside the disk body; a storage slot is opened on one side of the disk body; a rotating slot is opened above the storage slot; an elastic limiter is connected to both sides of the inner wall of the card slot; a card stabilizing slide groove is slidably connected to the outer wall of the stabilizing slide block; an indicator disk is set on the top of the disk body; an indicator needle is connected to the top of the indicator disk through a rotating rod. This device solves the problem that when the existing equipment is used, the drawing rod can be combined with a paintbrush to complete the teaching of mathematical addition and subtraction by limiting the number of protruding bodies through the expansion and contraction of geometric rubber bands. However, when teaching addition and subtraction above the decimal system, students still cannot understand the meaning and specific operations of the decimal system, and the degree of student participation is not high, which reduces the practicality of the device. Utility Model Content

[0004] The purpose of the utility model is to provide a teaching aid for teaching addition and subtraction of elementary school mathematics, so as to solve the problems raised in the background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a teaching aid for elementary school mathematics addition and subtraction, comprising:

[0006] A plurality of cylinders for teaching addition and subtraction in elementary school mathematics, each of which is marked with four colors, and the ends of the cylinders are slidably connected with fixing holes for convenient connection during mathematical calculations, and the fixing holes are arranged on the top of the storage plate;

[0007] The box body has a movable groove inside for easy connection, the inner wall of the movable groove is slidably connected with the side wall of the storage board, and the top of the storage board is provided with an interpretation board for assisting decimal mathematics teaching;

[0008] The box cover is hinged to the box body through a hinge, and a lower lock buckle and an upper lock buckle are respectively provided on the same side of the box body and the box cover, and the upper lock buckle is connected to the lower lock buckle.

[0009] As a preferred embodiment, the side wall of the box is slidably connected to two draw boxes, the two draw boxes are respectively a first draw box and a second draw box, and the ends of the first draw box and the second draw box are both provided with grooves for applying force when pulling.

[0010] As a preferred embodiment, the inner wall of the first drawer is provided with a plurality of cylinders marked with four colors, and the circumference of the cylinders is smooth.

[0011] As a preferred embodiment, the second drawer is provided with a plurality of storage buckets for placing objects during addition and subtraction teaching, and four symmetrically arranged limiting columns are welded to the bottom of the storage buckets.

[0012] As a preferred embodiment, the limiting column is slidably connected with a corresponding connecting hole, the connecting hole is arranged on the inner bottom wall of the limiting groove, and the limiting groove is arranged on the top of the fixing plate.

[0013] As a preferred embodiment, the side wall of the fixing plate is slidably connected to the inner side wall of the box cover, and the bottom of the fixing plate is in contact with the storage plate.

[0014] As a preferred embodiment, the side wall of the fixing plate is slidably connected to the inner side wall of the box cover, and the bottom of the fixing plate is in contact with the storage plate.

[0015] As a preferred embodiment, an interpretation plate is provided on one side of each group of fixing holes, and different interpretations are engraved on the surface of each interpretation plate.

[0016] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0017] The teaching aid for elementary school mathematics addition and subtraction benefits from the design of several cylinders marked with four colors. The different colors of the cylinder markings are used to assist in decimal mathematics addition and subtraction operations, and the decimal relationship between colors can be distinguished through different colors. Four groups of fixed holes are arranged on the top of the storage plate, and an interpretation board is provided on one side of each group of fixed holes. From one end to the other end of the interpretation board, there are decimal interpretation scales, which facilitates the joint effect of color and the interpretation board, so that students can master mathematical skills better and faster when using the device to perform mathematical addition and subtraction calculations, thereby improving the practicability of the device.

[0018] The teaching aid for elementary school mathematics addition and subtraction has a designed storage bucket. The storage bucket is arranged inside the second drawer box. The second drawer box is pulled out through the groove under the action of the drawing board, and the fixing plate connected to the inner wall of the box cover is taken out and turned over. Four symmetrically arranged limiting pillars arranged at the bottom of the storage bucket are matched with the limiting grooves arranged on the top of the fixing plate, and connecting holes corresponding to the limiting pillars are arranged on the inner bottom wall of the limiting groove. Therefore, the storage bucket can be fixed under the action of the connecting holes and the limiting pillars. When cylinders marked with different colors are sequentially placed in different storage buckets, the cylinders can be quickly taken out during mathematics teaching demonstration. The auxiliary addition and subtraction teaching is completed through the connection between the cylinders and the fixing pillars, which is convenient for operation.

[0019] Thanks to the designed hinges that connect the box body and the box cover, a lower lock buckle and an upper lock buckle are respectively arranged on the same side of the box body and the box cover, and the upper and lower lock buckles are attracted to fix the box cover and the box body. A rotating handle is provided on the top of the box cover. The setting of the handle facilitates the overall movement of the device.

[0020] The device solves the problem that the existing equipment cannot flexibly provide guidance on decimal mathematics when teaching addition and subtraction in primary school mathematics. By setting different colors and corresponding interpretation boards on the storage board, the application scope of teaching aids for primary school mathematics teaching is improved, the participation of students in the teaching process is increased, and the practicality of the device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the structure of a teaching aid for teaching addition and subtraction of elementary school mathematics in an embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the connection structure between the box body and the box cover in the embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the storage plate in the embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the first drawer box in the embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the second drawer box in the embodiment of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the storage bucket in the embodiment of the utility model;

[0028] Figure 7 It is a structural schematic diagram of a fixing plate in an embodiment of the utility model.

[0029] Description of reference numerals:

[0030] In the figure: 1. box body; 2. first drawer; 3. second drawer; 4. box cover; 5. handle; 6. upper lock buckle; 7. lower lock buckle; 8. storage board; 9. fixed plate; 10. movable slot; 11. fixed hole; 12. interpretation board; 13. groove; 14. slide plate; 15. cylinder; 16. storage bucket; 17. limit column; 18. limit slot; 19. connecting hole. DETAILED DESCRIPTION

[0031] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0032] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0033] The connection method can be bonding, welding, bolt connection, etc., depending on actual needs. Example

[0034] Reference to the drawings in the specification Figures 1 to 7 As shown, because the existing teaching aids for teaching addition and subtraction in primary school mathematics cannot be used for decimal addition and subtraction when used, students cannot quickly grasp the relationship between decimals in mathematics when using them. Therefore, the present application aims to guide students to master it through auxiliary forms, under the effect of the interpretation board 12 and color.

[0035] This embodiment includes:

[0036] A plurality of cylinders 15 are used for teaching addition and subtraction in elementary school mathematics. The cylinders 15 are evenly divided into four colors for marking. The cylinders 15 can be distinguished by marking the cylinders 15 with four different colors. The corresponding colors of the decimal system in elementary school mathematics teaching are converted between different colors (similar to different colors representing different levels, because today's elementary school students are no longer unfamiliar with television and collections, and also understand the relationship between analog digital treasures. By advancing between colors and introducing them into the decimal teaching of mathematics, students' acceptance can be guaranteed), which is conducive to prompting students to quickly master the skills of the decimal system and improve the overall teaching level.

[0037] Two sliding drawers are provided on one side of the box body 1, and slide plates 14 are welded to the side walls of the two drawers. The slide plates 14 are slidably connected to the slide rails arranged inside the box body 1. The two drawers are respectively a first drawer 2 and a second drawer 3. The second drawer 2 is provided with a plurality of cylinders 15 marked with four colors. The second drawer 3 is fixed with a storage bucket 16 for distinguishing cylinders 15 of different colors during primary school mathematics teaching. The setting of the storage bucket 16 can further distinguish cylinders 15 of different colors, deepen students' impressions, and quickly grasp the decimal relationship between numbers.

[0038] The end of the cylinder 15 is slidably connected with a fixing hole 11 for connection during mathematical calculations. The fixing hole 11 is arranged on the top of the storage plate 8. Four groups of fixing holes 11 are arranged at equal intervals on the top of the storage plate 8. An embedded interpretation plate 12 is arranged on the same side of each group of fixing holes 11. The interpretations etched on the surface of each interpretation plate 12 are different, represented by ones, tens, hundreds and thousands, and supplemented by Arabic numerals 1, 2, 3, 4. The four colors of the cylinder 15 are set to further deepen the students' impression and facilitate addition and subtraction operations during mathematics teaching.

[0039] The box body 1 is provided with a movable groove 10 for easy connection inside. The inner wall of the movable groove 10 is slidably connected to the side wall of the storage plate 8. A fixed plate 9 is slidably connected to the inner wall of the box cover 4. The bottom of the fixed plate 9 abuts against the storage plate 8. The top of the fixed plate 9 is provided with four offset limit grooves 18. The inner wall of the limit groove 18 is provided with four symmetrically arranged connecting holes 16. The inner wall of the connecting hole 16 is slidably connected to the limit column 17, and cooperates with the fixed plate 9 to complete the fixation of the storage bucket 16, so that the different color cylinders 15 placed inside the storage bucket 16 are more stable.

[0040] The box cover 4 is hinged to the box body 1 through hinges. A lower lock buckle 7 and an upper lock buckle 6 are respectively provided on the same side of the box body 1 and the box cover 4. The upper lock buckle 6 is connected to the lower lock buckle 7. The suction between the upper lock buckle 6 and the lower lock buckle 7 can fix the box cover 4 to the box body 1. A rotatable handle 5 is provided on the top of the box cover 4. The fixed device can be moved as a whole by the handle 5 for easy use.

[0041] How it works

[0042] When using the teaching aid for elementary school mathematics addition and subtraction, the operator first moves the device to a suitable position (such as a podium or a desk), separates the upper lock buckle 6 and the lower lock buckle 7, and separates the box cover 4 from the box body 1 under the action of the hinge;

[0043] Next, take out the fixing plate 9 arranged on the inner wall of the box cover 4, and turn it over so that the limiting groove 18 arranged on the top of the fixing plate 9 opens upward; fasten the groove 13, take out the first drawer 2 and the second drawer 3 under the action of the slide plate 14 and the slide rail, take out the four differently colored cylinders 15 marked inside the first drawer 2, and take out the storage bucket 16 placed inside the second drawer 3, and the bottom of the storage bucket 16 is provided with four symmetrical limiting columns 17, which are connected to the connecting holes 19 arranged in the limiting groove 18 to complete the fixing of the storage bucket 16, and then, put the cylinders 15 of different colors into the storage bucket 16 in turn;

[0044] Finally, according to the teaching stage of primary school mathematics, the teaching can be completed through the fixing hole 11 set on the top of the storage plate 8, the interpretation board 12 and the cylinders 15 of different colors.

[0045] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A teaching aid for teaching addition and subtraction in primary school mathematics, characterized in that: include: A plurality of cylinders (15) for teaching addition and subtraction in elementary school mathematics, wherein the plurality of cylinders (15) are divided into four colors for identification, and the ends of the cylinders (15) are slidably connected with fixing holes (11) for convenient connection during mathematical calculations, and the fixing holes (11) are arranged on the top of the storage plate (8); A box body (1), wherein a movable groove (10) is provided inside the box body (1) for facilitating connection, an inner wall of the movable groove (10) is slidably connected to a side wall of a storage plate (8), and an interpretation board (12) for assisting decimal mathematics teaching is provided on the top of the storage plate (8); A box cover (4), the box cover (4) is hinged to the box body (1) via a hinge, a lower lock buckle (7) and an upper lock buckle (6) are respectively provided on the same side of the box body (1) and the box cover (4), and the upper lock buckle (6) is connected to the lower lock buckle (7).

2. The teaching aid for teaching addition and subtraction of elementary school mathematics according to claim 1, characterized in that: The side wall of the box body (1) is slidably connected to two drawer boxes, the two drawer boxes being a first drawer box (2) and a second drawer box (3). The ends of the first drawer box (2) and the second drawer box (3) are both provided with grooves (13) for applying force when drawing.

3. A teaching aid for teaching addition and subtraction of elementary school mathematics according to claim 2, characterized in that: The inner wall of the first drawer box (2) is provided with a plurality of cylinders (15) marked with four colors, and the circumference of the cylinders (15) is smooth.

4. The teaching aid for teaching addition and subtraction of elementary school mathematics according to claim 2, characterized in that: The second drawer box (3) is provided with a plurality of storage buckets (16) for placing objects during addition and subtraction teaching, and four symmetrically arranged limit posts (17) are welded to the bottom of the storage buckets (16).

5. A teaching aid for teaching addition and subtraction of elementary school mathematics according to claim 4, characterized in that: The limiting column (17) is slidably connected to a corresponding connection hole (19), the connection hole (19) is arranged on the inner bottom wall of the limiting groove (18), and the limiting groove (18) is arranged on the top of the fixing plate (9).

6. A teaching aid for teaching addition and subtraction of elementary school mathematics according to claim 5, characterized in that: The side wall of the fixing plate (9) is slidably connected to the inner side wall of the box cover (4), and the bottom of the fixing plate (9) is in contact with the storage plate (8).

7. A teaching aid for teaching addition and subtraction of elementary school mathematics according to claim 6, characterized in that: The top of the storage plate (8) is provided with four groups of fixing holes (11) arranged evenly at equal intervals, and each group of fixing holes (11) has ten holes.

8. The teaching aid for teaching addition and subtraction of elementary school mathematics according to claim 7, characterized in that: An interpretation plate (12) is provided on one side of each group of fixing holes (11), and a different interpretation is engraved on the surface of each interpretation plate (12).

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