A multifunctional arithmetic teaching aid

By designing multi-functional arithmetic teaching aids and using the combination of numerical symbols and operators to teach physically, the problem of low learning arithmetic efficiency in the existing technology is solved, and students can understand more intuitively and quickly master arithmetic skills.

CN111145615BActive Publication Date: 2025-02-25王中亚
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Patent Information

Application Number
CN202010082411.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-02-07
Publication Date
2025-02-25
Estimated Expiration
2040-02-07

AI Technical Summary

Technical Problem

Existing arithmetic teaching aids are demonstrated through virtual pictures, which leads to difficulties in understanding and low learning efficiency for students.

Method used

A multi-functional arithmetic teaching aid was designed, including a board body, a first placement slot, an operator ball and a digital ball. Through the combination of digital symbols and operators, students' understanding of digital symbols and operators is enhanced.

Benefits of technology

Through physical teaching methods, students can understand arithmetic concepts more intuitively, learn arithmetic quickly, improve learning efficiency, and avoid potential harm to students' eyes and physical health due to the lack of electronic devices.

✦ Generated by Eureka AI based on patent content.

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Abstract

A multifunctional arithmetic teaching aid of the present invention comprises: a plate body, two rows of first placement grooves are arranged on the top surface of the plate body, first operator balls are arranged between adjacent first placement grooves, number balls are arranged next to the first placement grooves, and second operator balls are arranged between adjacent number balls. The purpose of the present invention is to provide a multifunctional arithmetic teaching aid that is easy to operate and improves learning efficiency.
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Description

Technical Field

[0001] The invention belongs to the technical field of teaching aids, and in particular relates to a multifunctional arithmetic teaching aid. Background Art

[0002] Arithmetic education for young children is receiving more and more attention. It helps to develop children's intelligence. However, existing arithmetic teaching aids are mostly demonstrated through electronic devices. Since arithmetic is demonstrated through virtual pictures, it is difficult for students to understand, resulting in low efficiency in students' arithmetic learning. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the problem of low efficiency of learning arithmetic in the prior art.

[0004] To this end, the technical solution adopted is a multifunctional arithmetic teaching aid of the present invention, comprising: a board body, two rows of first placement grooves are arranged on the top surface of the board body, first operator balls are arranged between adjacent first placement grooves, number balls are arranged next to the first placement grooves, and second operator balls are arranged between adjacent number balls.

[0005] Preferably, second placement grooves are respectively provided on both sides of the top surface of the plate body.

[0006] Preferably, the number ball comprises: a first number ball and a second number ball.

[0007] Preferably, a ball storage groove is provided on the plate body.

[0008] Preferably, a horizontal guide groove is provided at the lower end of the first placement groove, and the guide groove is connected to the bottom end of the first placement groove, and a through hole is provided on the side wall of the plate body, one end of the through hole is connected to one end of the guide groove, a movable plate is provided in the guide groove, and the movable plate can move left and right in the guide groove, and a plurality of leakage holes are provided on the movable plate, each of the leakage holes corresponds to each of the first placement grooves one by one, one end of a connecting rod is connected to one end of the movable plate, and the other end of the connecting rod passes through the through hole and extends to the outside of the plate body and is connected to a button, the other end of the movable plate is connected to one end of a spring, and the other end of the spring is connected to the inner wall of the guide groove, and a cavity is provided below the guide groove, one end of the channel in the vertical direction is connected to the bottom end of the guide groove, and the other end of the channel is connected to the upper end of the cavity.

[0009] Preferably, an outlet is provided on the side wall of the plate body, and the outlet is communicated with the bottom of the cavity.

[0010] Preferably, a cover plate is provided on the outlet, one end of the cover plate is hingedly connected to the side wall of the plate body, and the other end of the cover plate is connected to the side wall of the plate body by screws.

[0011] Preferably, a prize distribution device is provided in the board body, and the prize distribution device comprises:

[0012] A slide plate is arranged in the channel, the slide plate is placed obliquely, a groove is arranged on the side wall of the channel, a vertical support plate is arranged in the groove, a turntable is arranged on one side of the support plate, one side of the turntable extends out of the groove, and a plurality of blades are arranged on the turntable along the circumferential direction, one end of the slide plate is fixedly connected to the inner wall of the channel near the guide groove, and the other end of the slide plate extends toward the blade;

[0013] a first rotating shaft, one end of which is connected to the rotating disk, the other end of which passes through the supporting plate and is connected to the first gear, a second rotating shaft is arranged below the first gear, a second gear is arranged on the second rotating shaft, the first gear is meshed with the second gear, the diameter of the first gear is smaller than the diameter of the second gear, one end of the second rotating shaft is mounted on the supporting plate through a bearing, and an incomplete gear is arranged on the other end of the second rotating shaft;

[0014] A rack is arranged below the incomplete gear, the rack is placed in a horizontal direction, the rack is meshed with the incomplete gear, one end of the rack is connected to one end of a first sliding rod, the other end of the first sliding rod passes through a sliding sleeve, the sliding sleeve is fixed on the support plate, and the first sliding rod can reciprocate left and right along the sliding sleeve;

[0015] A prize delivery port is arranged at the top of the plate body, a first material row tube is arranged in a vertical direction in the plate body, one end of the first material row tube is connected with the prize delivery port, the other end of the first material row tube is connected with one end of the second material row tube, the other end of the second material row tube extends to the side wall of the plate body, and a horizontal opening groove is arranged on the outer wall of the first material row tube;

[0016] a second sliding rod, one end of which is connected to the rack away from one end of the first sliding rod, the other end of which passes through a second sliding sleeve and is connected to one end of a baffle, the other end of which is inserted into the open groove, the second sliding sleeve is fixed to the support plate, and the second sliding rod can reciprocate left and right along the second sliding sleeve;

[0017] A baffle is arranged on the second slide rod, and the baffle is located between the second slide sleeve and the baffle plate. A tubular spring is sleeved on the second slide rod, and one end of the tubular spring is fixedly connected to the side wall of the first material storage tube, and the other end of the tubular spring is fixedly connected to the baffle.

[0018] Preferably, a sealing plate is provided above the prize delivery port, one end of the sealing plate is hingedly connected to the top end of the plate body, and the other end of the sealing plate is connected to the top end of the plate body by screws.

[0019] Preferably, a hook is provided on the side wall of the plate body.

[0020] The technical solution of the present invention has the following advantages: a multifunctional arithmetic teaching aid of the present invention comprises: a plate body, two rows of first placement grooves are arranged on the top surface of the plate body, first operator balls are arranged between adjacent first placement grooves, number balls are arranged next to the first placement grooves, and second operator balls are arranged between adjacent number balls. Due to the teaching method of combining digital symbols and operators with real objects, students can deepen their understanding of digital symbols and operation symbols and quickly learn arithmetic. Since the teaching aid is easy to operate and does not require electronic devices, it will not hurt children's eyes or affect their physical health.

[0021] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0022] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a schematic diagram of the structure of the present invention.

[0025] Figure 2 It is a structural schematic diagram of the positioning point in the present invention.

[0026] Figure 3 This is a schematic diagram of the structure of the prize distribution device of the present invention.

[0027] Figure 4 It is a schematic diagram of the transmission structure of the prize distributing device of the present invention.

[0028] Figure 5 It is a schematic diagram of the internal structure of the groove in the present invention.

[0029] The markings in the accompanying drawings are as follows: 1-plate body, 2-first placement groove, 3-first operator ball, 4-digital ball, 5-second operator ball, 6-second placement groove, 7-ball storage groove, 8-guide groove, 9-through hole, 10-movable plate, 11-leak hole, 12-connecting rod, 13-button, 14-spring, 15-cavity, 16-channel, 17-exit, 18-cover plate, 19-slide plate, 20-groove, 21-support plate, 22-turntable, 23-blade, 24-first rotating shaft, 25-first gear, 26-second rotating shaft, 27-second gear, 28-incomplete gear, 29-rack, 30-first slide bar, 31-slide sleeve, 32-prize delivery port, 33-first material row tube, 34-second material row tube, 35-opening slot, 36-second slide bar, 37-second slide sleeve, 38-baffle, 39-baffle, 40-tube spring, 41-sealing plate. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0031] The embodiment of the present invention provides a multifunctional arithmetic teaching aid, such as Figure 1 As shown, it includes: a plate body 1, two rows of first placement grooves 2 are arranged on the top surface of the plate body 1, first operator balls 3 are arranged between adjacent first placement grooves 2, number balls 4 are arranged next to the first placement grooves 2, and second operator balls 5 are arranged between adjacent number balls 4.

[0032] The working principle and beneficial technical effects of the above technical solution are as follows: when teaching arithmetic to students, for example, 1+2=3, the board body 1 is placed on the table, and three digital balls 4 are rotated to the corresponding numbers (1, 2, 3), and two second operator balls 5 are rotated to the corresponding operators (+, =), and then glass beads (1, 2, 3) are placed in the corresponding first placement grooves 2 one by one, and the two first operator balls 3 are rotated to the corresponding operators (+, =). Through the teaching method of combining digital symbols and operators with real objects, students can deepen their understanding of digital symbols and operation symbols, quickly learn arithmetic, and improve the efficiency of students learning arithmetic; because the teaching aid is simple to operate and does not require electronic devices, it will not hurt children's eyes and will not affect children's physical health.

[0033] In one embodiment, second placement grooves 6 are respectively provided on both sides of the top surface of the plate body 1 .

[0034] The working principle and beneficial technical effects of the above technical solution are as follows: a certain number of glass beads can be placed in the second placement slot 6. For example, 10 glass beads are placed in the second placement slot 6 on the left, and then (1 glass bead, 9 glass beads), (2 glass beads, 8 glass beads), (3 glass beads, 7 glass beads), (4 glass beads, 6 glass beads), etc. are placed in the upper and lower rows of the first placement slots 2 respectively. In this way, students' understanding of numbers can be more specific and profound, and the efficiency of learning arithmetic can be improved.

[0035] In one embodiment, the number ball 4 includes: a first number ball 401 and a second number ball 402 .

[0036] The working principle and beneficial technical effects of the above technical solution are as follows: the first digital ball 401 represents the tens digit, and the second digital ball 402 represents the ones digit, which can be used for teaching two-digit arithmetic.

[0037] In one embodiment, a ball storage groove 7 is provided on the plate body 1 .

[0038] The working principle and beneficial technical effects of the above technical solution are as follows: after using the teaching aids, all the glass beads are placed in the ball storage groove 7 for storage.

[0039] In one embodiment, a horizontal guide groove 8 is provided at the lower end of the first placement groove 2, and the guide groove 8 is connected to the bottom end of the first placement groove 2. A through hole 9 is provided on the side wall of the plate body 1, and one end of the through hole 9 is connected to one end of the guide groove 8. A movable plate 10 is provided in the guide groove 8, and the movable plate 10 can move left and right in the guide groove 8. A plurality of leakage holes 11 are provided on the movable plate 10, and each leakage hole 11 corresponds to each first placement groove 2 one by one. One end of a connecting rod 12 is connected to one end of the movable plate 10, and the other end of the connecting rod 12 passes through the through hole 9 and extends to the outside of the plate body 1, and is connected to a button 13. The other end of the movable plate 10 is connected to one end of a spring 14, and the other end of the spring 14 is connected to the inner wall of the guide groove 8. A cavity 15 is provided below the guide groove 8, and one end of a vertical channel 16 is connected to the bottom end of the guide groove 8, and the other end of the channel 16 is connected to the upper end of the cavity 15.

[0040] The working principle and beneficial technical effects of the above technical solution are as follows: after demonstrating arithmetic to students, press the button 13 by hand to push the connecting rod 12 to move to the right along the through hole 9, the connecting rod 12 drives the movable plate 10 to move to the right along the guide groove 8, the leakage hole 11 moves to the bottom of the first placement groove 2, the leakage hole 11 is connected with the first placement groove 2, the glass beads in the first placement groove 2 fall into the cavity 15 through the leakage hole 11 and the channel 16 for storage, release the button 13, and then the next arithmetic teaching demonstration can be carried out.

[0041] In one embodiment, an outlet 17 is disposed on the side wall of the plate body 1 , and the outlet 17 is communicated with the bottom of the cavity 15 .

[0042] The working principle and beneficial technical effects of the above technical solution are as follows: the outlet 17 is used to take out the glass beads in the cavity 15 .

[0043] In one embodiment, a cover plate 18 is disposed on the outlet 17 , one end of the cover plate 18 is hingedly connected to the side wall of the plate body 1 , and the other end of the cover plate 18 is connected to the side wall of the plate body 1 by screws.

[0044] The working principle and beneficial technical effects of the above technical solution are as follows: the cover plate 18 is used to seal the outlet 17 to prevent dust or foreign matter from entering, and is connected by screws to facilitate installation and removal of the cover plate 18.

[0045] In one embodiment, Figure 3-5 As shown, a prize distribution device is provided in the plate body 1, and the prize distribution device includes:

[0046] A slide plate 19 is arranged in the channel 16. The slide plate 19 is placed obliquely. A groove 20 is arranged on the side wall of the channel 16. A vertical support plate 21 is arranged in the groove 20. A turntable 22 is arranged on one side of the support plate 21. One side of the turntable 22 extends out of the groove 20. The turntable 22 is provided with a plurality of blades 23 along the circumferential direction. One end of the slide plate 19 is fixedly connected to the inner wall of the channel 16 near the guide groove 8, and the other end of the slide plate 19 extends toward the blade 23.

[0047] A first rotating shaft 24, one end of which is connected to the rotating disk 22, and the other end of which passes through the supporting plate 21 and is connected to the first gear 25. A second rotating shaft 26 is provided below the first gear 25, and a second gear 27 is provided on the second rotating shaft 26. The first gear 25 meshes with the second gear 27, and the diameter of the first gear 25 is smaller than the diameter of the second gear 27. One end of the second rotating shaft 26 is mounted on the supporting plate 21 through a bearing, and an incomplete gear 28 is provided on the other end of the second rotating shaft 26. A ratchet is provided on the first rotating shaft 24, so that the rotating disk 22 can only rotate counterclockwise to prevent reversal.

[0048] A rack 29 is arranged below the incomplete gear 28. The rack 29 is placed in a horizontal direction. The rack 29 is meshed with the incomplete gear 28. One end of the rack 29 is connected to one end of a first slide bar 30. The other end of the first slide bar 30 passes through a sleeve 31. The sleeve 31 is fixed on the support plate 21. The first slide bar 30 can reciprocate left and right along the sleeve 31.

[0049] The prize placing port 32 is arranged at the top of the plate body 1. A first material placing tube 33 in a vertical direction is arranged in the plate body 1. One end of the first material placing tube 33 is connected to the prize placing port 32. The other end of the first material placing tube 33 is connected to one end of a second material placing tube 34. The other end of the second material placing tube 34 extends to the side wall of the plate body 1. The outer wall of the first material placing tube 33 is provided with a horizontal opening groove 35.

[0050] A second slide bar 36, one end of which is connected to the end of the rack 29 away from the first slide bar 30, the other end of which passes through a second slide sleeve 37 and is connected to one end of a baffle 38, the other end of which is inserted into the opening groove 35, the second slide sleeve 37 is fixed on the support plate 21, and the second slide bar 36 can reciprocate left and right along the second slide sleeve 37;

[0051] The baffle 39 is arranged on the second sliding rod 36, and the baffle 39 is located between the second sliding sleeve 37 and the baffle plate 38. The second sliding rod 36 is sleeved with a tubular spring 40, and one end of the tubular spring 40 is fixedly connected to the side wall of the first displacement tube 33, and the other end of the tubular spring 40 is fixedly connected to the baffle 39.

[0052] The working principle and beneficial technical effects of the above technical solution are as follows: after completing an arithmetic demonstration, by pressing the button 13, the glass beads in the first placement groove 2 will fall into the channel 16, slide onto the blade 23 through the slide plate 19, and drive the blade 23 to rotate counterclockwise under the action of gravity. The blade 23 drives the turntable 22 to rotate, and the turntable 22 drives the first rotating shaft 24 and the first gear 25 to rotate counterclockwise. Through the meshing of the first gear 25 and the second gear 27, the first gear 25 drives the second gear 27 to rotate clockwise, and the second gear 27 rotates clockwise. The wheel 27 drives the second rotating shaft 26 and the incomplete gear 28 to rotate clockwise, and through the meshing of the incomplete gear 28 and the rack 29, the rack 29, the first slide bar 30, the second slide bar 36, the baffle 38 and the baffle 39 are moved to the left together, and the tubular spring 40 is stretched at the same time. When the baffle 38 moves out of the opening slot 35, the first row of goods tubes 33 is in a conducting state, and the gifts in the first row of goods tubes 33 are sequentially discharged from the board body 1 through the first row of goods tubes 33 and the second row of goods tubes 34 to reward students, so as to stimulate students' interest in learning arithmetic. When the incomplete gear 28 continues to rotate, the meshing of the incomplete gear 28 with the rack 29 will fail. At this time, under the elastic force of the tubular spring 40, the baffle 39, the rack 29, the first slide bar 30, the second slide bar 36 and the baffle 38 are pulled to move rightward and inserted into the opening slot 35, so that the first row of goods tubes 33 are in a blocking state, and the gifts in the first row of goods tubes 33 will not stop being distributed. It can be seen that the distribution of gifts requires students to continuously practice arithmetic. After the practice, the falling balls continuously push the blades 23 and the turntable 22 to rotate. Only when a certain number of balls are accumulated, the baffle 38 in the first row of tubes 33 will be opened to allow the gifts to be distributed. After the gifts are distributed, under the elastic force of the tubular spring 40, the baffle 38 will immediately block the first row of tubes 33 and stop the distribution of gifts. Only when students continue to practice and accumulate enough practice, the gifts will be distributed again. The falling glass beads drive the blades 23 to rotate, making the output torque of the first rotating shaft 24 smaller. Since the diameter of the first gear 25 is smaller than the diameter of the second gear 27, the first gear 25 and the second gear 27 are reduced transmission. The torque on the first rotating shaft 24 is transmitted to the second rotating shaft 26, and the torque will increase, so that the incomplete gear 28 has greater power to drive the rack 29 to move and stretch the tubular spring 40. Through the reduction transmission of the first gear 25 and the second gear 27, and the step-by-step reduction transmission of the incomplete gear 28 and the rack 29, students need to practice many times and reach a certain amount of practice before the prize distribution device can be triggered, which is challenging for students and can further stimulate their enthusiasm for learning arithmetic. In addition, a ratchet is provided on the first rotating shaft 24, so that the turntable 22 can only rotate counterclockwise, preventing the transmission device from being reversely transmitted under the action of the tubular spring 40 or other external forces, thereby affecting the stability of the transmission device.

[0053] In one embodiment, a sealing plate 41 is disposed above the prize delivery port 32 , one end of the sealing plate 41 is hingedly connected to the top of the plate body 1 , and the other end of the sealing plate 41 is connected to the top of the plate body 1 by screws.

[0054] The working principle and beneficial technical effects of the above technical solution are as follows: after all the gifts are distributed, the sealing plate 41 is opened, new gifts are placed from the prize placement port 32, and then the sealing plate 41 is fixed to the top of the plate body 1 by screws.

[0055] In one embodiment, a hook is provided on the side wall of the plate body 1 .

[0056] The working principle and beneficial technical effects of the above technical solution are as follows: when the arithmetic teaching aid is not in use, the board body 1 can be hung up and stored by means of a hook.

[0057] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A multifunctional arithmetic teaching aid, characterized in that: include: A plate body (1), wherein two rows of first placement grooves (2) are arranged on the top surface of the plate body (1), first operator rolling balls (3) are arranged between adjacent first placement grooves (2), number rolling balls (4) are arranged next to the first placement grooves (2), and second operator rolling balls (5) are arranged between adjacent number rolling balls (4); A horizontal guide groove (8) is provided at the lower end of the first placement groove (2), and the guide groove (8) is connected to the bottom end of the first placement groove (2). A through hole (9) is provided on the side wall of the plate body (1), and one end of the through hole (9) is connected to one end of the guide groove (8). A movable plate (10) is provided in the guide groove (8), and the movable plate (10) can move left and right in the guide groove (8). A plurality of leakage holes (11) are provided on the movable plate (10), and each leakage hole (11) corresponds to each first placement groove (2) one by one, and is connected to the first placement groove (2). One end of the rod (12) is connected to one end of the movable plate (10), the other end of the connecting rod (12) passes through the through hole (9) and extends to the outside of the plate body (1) and is connected to a button (13), the other end of the movable plate (10) is connected to one end of a spring (14), the other end of the spring (14) is connected to the inner wall of the guide groove (8), a cavity (15) is provided below the guide groove (8), one end of a vertical channel (16) is connected to the bottom end of the guide groove (8), and the other end of the channel (16) is connected to the upper end of the cavity (15); The plate body (1) is provided with a prize distribution device, and the prize distribution device comprises: A slide plate (19) is arranged in the channel (16), the slide plate (19) is placed obliquely, a groove (20) is arranged on the side wall of the channel (16), a vertical support plate (21) is arranged in the groove (20), a turntable (22) is arranged on one side of the support plate (21), one side of the turntable (22) extends out of the groove (20), and a plurality of blades (23) are arranged on the turntable (22) along the circumferential direction, one end of the slide plate (19) is fixedly connected to the inner wall of the channel (16) near the guide groove (8), and the other end of the slide plate (19) extends toward the blade (23); a first rotating shaft (24), one end of the first rotating shaft (24) being connected to the rotating disk (22), the other end of the first rotating shaft (24) passing through the supporting plate (21) and being connected to the first gear (25), a second rotating shaft (26) being arranged below the first gear (25), a second gear (27) being arranged on the second rotating shaft (26), the first gear (25) being meshed with the second gear (27), the diameter of the first gear (25) being smaller than the diameter of the second gear (27), one end of the second rotating shaft (26) being mounted on the supporting plate (21) via a bearing, and an incomplete gear (28) being arranged on the other end of the second rotating shaft (26); A rack (29) is arranged below the incomplete gear (28), the rack (29) is placed in a horizontal direction, the rack (29) is meshed with the incomplete gear (28), one end of the rack (29) is connected to one end of a first sliding rod (30), the other end of the first sliding rod (30) passes through a sliding sleeve (31), the sliding sleeve (31) is fixed on the support plate (21), and the first sliding rod (30) can reciprocate left and right along the sliding sleeve (31); A prize delivery port (32) is arranged at the top of the plate body (1); a first material row pipe (33) is arranged in a vertical direction in the plate body (1); one end of the first material row pipe (33) is connected to the prize delivery port (32); the other end of the first material row pipe (33) is connected to one end of a second material row pipe (34); the other end of the second material row pipe (34) extends to the side wall of the plate body (1); and an opening groove (35) is arranged in a horizontal direction on the outer wall of the first material row pipe (33); A second slide bar (36), one end of the second slide bar (36) is connected to an end of the rack (29) away from the first slide bar (30), the other end of the second slide bar (36) passes through a second slide sleeve (37) and is connected to one end of a baffle (38), the other end of the baffle (38) is inserted into the opening groove (35), the second slide sleeve (37) is fixed on the support plate (21), and the second slide bar (36) can reciprocate left and right along the second slide sleeve (37); a baffle (39) arranged on the second slide bar (36), the baffle (39) being located between the second slide sleeve (37) and the baffle plate (38), the second slide bar (36) being sleeved with a tubular spring (40), one end of the tubular spring (40) being fixedly connected to the side wall of the first material discharging tube (33), and the other end of the tubular spring (40) being fixedly connected to the baffle (39); A sealing plate (41) is arranged above the prize delivery port (32), one end of the sealing plate (41) is hingedly connected to the top of the plate body (1), and the other end of the sealing plate (41) is connected to the top of the plate body (1) via screws.

2. A multifunctional arithmetic teaching aid according to claim 1, characterized in that: Second placement grooves (6) are respectively provided on both sides of the top end surface of the plate body (1).

3. A multifunctional arithmetic teaching aid according to claim 1, characterized in that: The number ball (4) comprises a first number ball (401) and a second number ball (402).

4. A multifunctional arithmetic teaching aid according to claim 1, characterized in that: The plate body (1) is provided with a ball storage groove (7).

5. A multifunctional arithmetic teaching aid according to claim 1, characterized in that: An outlet (17) is provided on the side wall of the plate body (1), and the outlet (17) is communicated with the bottom of the cavity (15).

6. A multifunctional arithmetic teaching aid according to claim 5, characterized in that: The outlet (17) is provided with a cover plate (18), one end of the cover plate (18) is hingedly connected to the side wall of the plate body (1), and the other end of the cover plate (18) is connected to the side wall of the plate body (1) by means of screws.

7. A multifunctional arithmetic teaching aid according to claim 1, characterized in that: A hook is provided on the side wall of the plate body (1).

Citation Information

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