Assembled mathematical probability demonstration teaching aid

Abstract

The utility model relates to the technical field of teaching aids, and discloses an assembled mathematical probability demonstration teaching aid, which comprises a base and a probability plate, two sides of the upper surface of the base are fixedly connected with supporting vertical plates, the upper part of the outer wall of the front end of the probability plate is provided with a first chamber, and the lower part of the outer wall of the front end of the probability plate is provided with a second chamber. A feeding port is formed in the upper end of the inner wall of the first cavity, a sealing plate is arranged at the upper end of the feeding port, fastening bolts are arranged at the four corners of the upper surface of the sealing plate, and the fastening bolts penetrate through the sealing plate and are fixedly connected with the feeding port. According to the utility model, the rotatable probability plate is arranged, so that the marbles in the first chamber and the second chamber can enter one side of the first chamber and the second chamber through the circulation holes, and the distribution probability of the marbles falling into the gaps of the first grid plate or the second grid plate is obtained through statistics, thereby being convenient for repeated experiments, and further being convenient for improving the accuracy of the experiments.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching aids, in particular to an assembled mathematical probability demonstration teaching aid. Background Art

[0002] Mathematical probability demonstration teaching aids are a kind of teaching aids used to teach and demonstrate the concept of probability. Mathematical probability demonstration teaching aids can be used to simulate various probability experiments and scenarios. Mathematical probability demonstration teaching aids can help students intuitively understand the concept of probability and deepen their understanding of probability calculation and probability laws. Mathematical probability demonstration teaching aids can also stimulate students' interest in learning and let them experience the fun and charm of mathematics in actual operations.

[0003] Therefore, those skilled in the art provide an assembled mathematical probability demonstration teaching aid to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose an assembled mathematical probability demonstration teaching aid. Different numbers of marbles can be put into the probability board through the feed port, and then the probability of marble distribution of different numbers of specimens can be obtained, which is convenient for users to make different marble distribution probability experiments and improves the diversity and interest of the experiments.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An assembled mathematical probability demonstration teaching aid comprises a base and a probability board, both sides of the upper surface of the base are fixedly connected with support vertical plates, a first chamber is provided at the upper part of the front outer wall of the probability board, a second chamber is provided at the lower part of the front outer wall of the probability board, a feed port is provided at the upper end of the inner wall of the first chamber, a sealing plate is provided at the upper end of the feed port, fastening bolts are provided at the four corners of the upper surface of the sealing plate, the fastening bolts penetrate the sealing plate and are fixedly connected to the feed port, first observation windows are fixedly connected at the front and rear ends of the inner walls on both sides of the first chamber, and second observation windows are fixedly connected at the front and rear ends of the inner walls on both sides of the second chamber;

[0007] Through the above technical scheme, by setting up a rotatable probability plate, it is convenient to allow the marbles inside the first chamber and the second chamber to enter one side through the flow hole, and the probability of the distribution of marbles falling into the gap between the first grid plate or the second grid plate is statistically obtained, thereby facilitating repeated experiments and improving the accuracy of the experiment.

[0008] Furthermore, the upper end of the outer wall of the support vertical plate on one side close to the center of the base is rotatably connected to a rotation rod, and the side of the rotation rod close to the center of the base is rotatably connected to the probability plate;

[0009] Through the above technical solution, it is convenient for the user to flip the probability plate, so that the marbles inside the first chamber and the second chamber enter one side through the circulation holes, and check the number of marbles falling into the gap of the first grid plate or the second grid plate through the first observation window or the second observation window, and statistically obtain the probability of marble distribution.

[0010] Furthermore, a storage drawer is slidably connected to the middle portion of the front outer wall of the base, and a handle is fixedly connected to the middle portion of the front outer wall of the storage drawer;

[0011] Through the above technical solution, it is convenient for the user to open the storage drawer by the handle and store the marbles inside the storage drawer, and then it is convenient for the user to put different numbers of marbles into the probability board as reference samples.

[0012] Furthermore, the first chamber and the second chamber are provided with flow holes on one side close to the center of the probability plate;

[0013] The above technical solution makes it easy for the user to repeatedly rotate the probability plate, thereby performing multiple repetitions of sample data.

[0014] Furthermore, the upper end of the inner wall of one side of the first observation window close to the center of the probability plate is fixedly connected with a plurality of first grid plates;

[0015] The above technical solution makes it easy for users to observe the number of marbles falling into the first grid plate interval, and then obtain the probability of marble distribution.

[0016] Furthermore, a plurality of second grid plates are fixedly connected to the lower end of the inner wall of one side of the second observation window close to the center of the probability plate;

[0017] The above technical solution makes it easy for users to observe the number of marbles falling into the interval of the second grid plate, and then obtain the probability of marble distribution.

[0018] Furthermore, a plurality of first blocking rods are fixedly connected to the lower end of the inner wall of one side of the first observation window close to the center of the probability plate;

[0019] Through the above technical solution, the direction of the marbles is disturbed by the first blocking rod, thereby simulating the probability of different events occurring.

[0020] Furthermore, a plurality of second blocking rods are fixedly connected to the upper end of the inner wall of one side of the second observation window close to the center of the probability plate;

[0021] Through the above technical solution, the second blocking rod is used to disrupt the direction of the marbles, thereby simulating the probability of different events occurring.

[0022] The utility model has the following beneficial effects:

[0023] 1. The utility model proposes an assembled mathematical probability demonstration teaching aid. By setting a rotatable probability plate, it is convenient to allow the marbles inside the first chamber and the second chamber to enter one side through the flow hole, and statistically obtain the probability of the distribution of marbles falling into the gap between the first grid plate or the second grid plate, thereby facilitating repeated experiments and improving the accuracy of the experiment.

[0024] 2. The utility model proposes an assembled mathematical probability demonstration teaching aid. Different numbers of marbles can be put into the probability board through the feed port, and then the probability of marble distribution of different numbers of specimens can be obtained, which is convenient for users to make different marble distribution probability experiments and improves the diversity and interest of the experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an axonometric diagram of an assembled mathematical probability demonstration teaching aid proposed by the utility model;

[0026] Figure 2 An exploded diagram of an assembled mathematical probability demonstration teaching aid proposed by the utility model;

[0027] Figure 3 This is a schematic diagram of the main structure of an assembled mathematical probability demonstration teaching aid proposed by the utility model;

[0028] Figure 4 The utility model provides an assembled mathematical probability demonstration teaching aid. Figure 3 Enlarged view of point A in the middle.

[0029] Legend:

[0030] 1. Base; 2. Storage drawer; 3. Handle; 4. Support vertical plate; 5. Rotating rod; 6. Probability plate; 7. First chamber; 8. Second chamber; 9. First observation window; 10. Second observation window; 11. First grid plate; 12. Second grid plate; 13. First blocking rod; 14. Second blocking rod; 15. Flow hole; 16. Sealing plate; 17. Fastening bolt; 18. Feed port. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1-4The utility model provides an embodiment: an assembled mathematical probability demonstration teaching aid, comprising a base 1 and a probability board 6, both sides of the upper surface of the base 1 are fixedly connected with support vertical plates 4, a first chamber 7 is opened at the upper part of the front end outer wall of the probability board 6, a second chamber 8 is opened at the lower part of the front end outer wall of the probability board 6, a feed port 18 is opened at the upper end of the inner wall of the first chamber 7, a sealing plate 16 is arranged at the upper end of the feed port 18, fastening bolts 17 are arranged at the four corners of the upper surface of the sealing plate 16, the fastening bolts 17 all penetrate the sealing plate 16 and are fixedly connected to the feed port 18, first observation windows 9 are fixedly connected at the front and rear ends of the inner walls on both sides of the first chamber 7, and second observation windows 10 are fixedly connected at the front and rear ends of the inner walls on both sides of the second chamber 8.

[0033] Different numbers of marbles can be put into the probability board 6 through the feed port 18, and the probability of marble distribution of different numbers of specimens can be obtained, which is convenient for users to conduct different marble distribution probability experiments and improves the diversity and interest of the experiments.

[0034] The upper end of the outer wall of the supporting vertical plate 4 near the center of the base 1 is rotatably connected to a rotating rod 5, and the side of the rotating rod 5 near the center of the base 1 is rotatably connected to the probability plate 6, so that the user can flip the probability plate 6, and then the marbles inside the first chamber 7 and the second chamber 8 can enter one side through the circulation hole 15, and the number of marbles falling into the gap between the first grid plate 11 or the second grid plate 12 can be viewed through the first observation window 9 or the second observation window 10, and the probability of the distribution of the marbles can be statistically obtained. A storage drawer 2 is slidably connected to the middle of the front end outer wall of the base 1, and a handle 3 is fixedly connected to the middle of the front end outer wall of the storage drawer 2, so that the user can open the storage drawer 2 through the handle 3 and store the marbles inside the storage drawer, so that the user can put different numbers of marbles as reference samples into the interior of the probability plate 6, and the first chamber 7 and the second chamber 8 are provided with circulation holes 15 on one side near the center of the probability plate 6, so that the user can repeatedly rotate the probability plate 6. Plate 6, and thus multiple repeated sample data can be obtained. The first observation window 9 is fixedly connected to a plurality of first grid plates 11 at the upper end of the inner wall on one side near the center of the probability plate 6, so that the user can observe the number of marbles falling into the intervals of the first grid plates 11, and thus obtain the probability of the distribution of the marbles. The second observation window 10 is fixedly connected to a plurality of second grid plates 12 at the lower end of the inner wall on one side near the center of the probability plate 6, so that the user can observe the number of marbles falling into the intervals of the second grid plates 12, and thus obtain the probability of the distribution of the marbles. The first observation window 9 is fixedly connected to a plurality of first blocking rods 13 at the lower end of the inner wall on one side near the center of the probability plate 6, and the first blocking rods 13 are used to disrupt the direction of the marbles, so as to simulate the probability of different events. The second observation window 10 is fixedly connected to a plurality of second blocking rods 14 at the upper end of the inner wall on one side near the center of the probability plate 6, and the second blocking rods 14 are used to disrupt the direction of the marbles, so as to simulate the probability of different events.

[0035] Working principle: When using this assembled mathematical probability demonstration teaching aid, first, a certain number of marbles can be put into the probability plate 6 through the feed port 18, and then the first chamber 7 is closed by the sealing plate 16. Then, the probability plate 6 is rotated to facilitate the marbles in the first chamber 7 and the second chamber 8 to enter one side through the flow hole 15, and the probability of the marble distribution falling into the gap of the first grid plate 11 or the second grid plate 12 is statistically obtained. Finally, the probability plate 6 is repeatedly rotated to obtain multiple sets of marble distribution probability data.

Claims

1. An assembled mathematical probability demonstration teaching aid, comprising a base (1) and a probability board (6), characterized in that: Both sides of the upper surface of the base (1) are fixedly connected to support vertical plates (4), the upper part of the front outer wall of the probability plate (6) is provided with a first chamber (7), the lower part of the front outer wall of the probability plate (6) is provided with a second chamber (8), the upper end of the inner wall of the first chamber (7) is provided with a feed port (18), the upper end of the feed port (18) is provided with a sealing plate (16), the four corners of the upper surface of the sealing plate (16) are provided with fastening bolts (17), the fastening bolts (17) penetrate the sealing plate (16) and are fixedly connected to the feed port (18), the front end and the rear end of the inner wall of both sides of the first chamber (7) are fixedly connected to first observation windows (9), and the front end and the rear end of the inner wall of both sides of the second chamber (8) are fixedly connected to second observation windows (10).

2. The assembled mathematical probability demonstration teaching aid according to claim 1, characterized in that: The upper end of the outer wall of the support vertical plate (4) on one side close to the center of the base (1) is rotatably connected to a rotating rod (5), and the side of the rotating rod (5) close to the center of the base (1) is rotatably connected to the probability plate (6).

3. The assembled mathematical probability demonstration teaching aid according to claim 1, characterized in that: A storage drawer (2) is slidably connected to the middle portion of the front outer wall of the base (1), and a handle (3) is fixedly connected to the middle portion of the front outer wall of the storage drawer (2).

4. The assembled mathematical probability demonstration teaching aid according to claim 1, characterized in that: A flow hole (15) is provided on one side of the first chamber (7) and the second chamber (8) close to the center of the probability plate (6).

5. The assembled mathematical probability demonstration teaching aid according to claim 1, characterized in that: A plurality of first grid plates (11) are fixedly connected to the upper end of the inner wall of one side of the first observation window (9) close to the center of the probability plate (6).

6. The assembled mathematical probability demonstration teaching aid according to claim 1, characterized in that: A plurality of second grid plates (12) are fixedly connected to the lower end of the inner wall of one side of the second observation window (10) close to the center of the probability plate (6).

7. The assembled mathematical probability demonstration teaching aid according to claim 1, characterized in that: A plurality of first blocking rods (13) are fixedly connected to the lower end of the inner wall of one side of the first observation window (9) close to the center of the probability plate (6).

8. The assembled mathematical probability demonstration teaching aid according to claim 1, characterized in that: A plurality of second blocking rods (14) are fixedly connected to the upper end of the inner wall of one side of the second observation window (10) close to the center of the probability plate (6).

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