Mathematics teaching auxiliary device

Abstract

The invention relates to the technical field of mathematics teaching, in particular to an auxiliary device for mathematics teaching. Comprising a base, a transparent hollow frame, three laser emitters, a check block, a guide rail frame and the like, the transparent hollow frame is installed on the base, the three laser emitters are installed on the transparent hollow frame and the base respectively, the check block is installed on the transparent hollow frame and used for blocking laser, and the guide rail frame is installed on the transparent hollow frame. Through cooperation of the transparent hollow frame, the laser transmitter, the guide rail frame, the sliding frame, the movable block, the movable rod, the connecting frame, the fixed block, the light ball and the shielding mechanism, XYZ coordinate axes can be formed in colloidal suspension liquid through laser, then light spots can be formed on the inner wall of the transparent hollow frame through lighting of the light ball, and therefore points, lines or surfaces are established on the XYZ coordinate axes, and the detection accuracy is improved. And then through the cooperation of the driving mechanism, the translation mechanism and the lifting mechanism, the light ball can be controlled to move so as to simulate the movement of a point, a line or a surface in a three-dimensional space, so that a teacher can conveniently express a three-dimensional space concept, and a learner can conveniently understand the three-dimensional space concept.

Description

Technical Field

[0001] The invention relates to the technical field of mathematics teaching, and in particular to a mathematics teaching auxiliary device. Background Art

[0002] With the rapid development of science and technology, the field of education is undergoing unprecedented changes. In this wave, mathematics, as one of the basic subjects, has also ushered in a spring of innovation in its teaching methods and tools. Especially in linear algebra, an abstract and important branch of mathematics, the use of advanced teaching auxiliary devices has become an important way to improve teaching quality and enhance students' understanding. Linear algebra is a core component of modern mathematics and is widely used in computer science, engineering, physics, economics and other fields. It mainly studies concepts such as vectors, matrices, linear transformations and their properties, and provides powerful mathematical tools for solving practical problems.

[0003] With the rapid development of science and technology, the field of education is undergoing unprecedented changes. In this wave, mathematics, as one of the basic subjects, has also ushered in a spring of innovation in its teaching methods and tools. Especially in linear algebra, an abstract and important branch of mathematics, the use of advanced teaching auxiliary devices has become an important way to improve teaching quality and enhance students' understanding. Linear algebra is a core component of modern mathematics and is widely used in computer science, engineering, physics, economics and other fields. It mainly studies concepts such as vectors, matrices, linear transformations and their properties, and provides powerful mathematical tools for solving practical problems. Summary of the invention

[0004] In view of this, the present invention provides a mathematics teaching auxiliary device, which can solve the shortcomings that traditional linear algebra teaching mostly relies on blackboard lectures, paper teaching materials and simple two-dimensional graphic displays, which is inadequate in expressing three-dimensional space concepts and makes it difficult for students to understand.

[0005] The technical implementation scheme of the present invention is: a mathematics teaching auxiliary device, including a base, and also including a transparent hollow frame, a laser emitter, a block, a guide frame, a sliding frame, a movable block, a movable rod, a connecting frame, a fixed block, a light ball, a shielding mechanism, a driving mechanism, a translation mechanism and a lifting mechanism, the transparent hollow frame is installed on the base, three laser emitters are installed on the transparent hollow frame and the base respectively, and the lasers emitted by the three laser emitters form an X-axis, a Y-axis and a Z-axis respectively after intersection, the block is installed on the transparent hollow frame, the block is used to block the laser, the guide frame is installed on the transparent hollow frame, the sliding frame is installed on the transparent hollow frame, The frame is slidably installed on the guide frame, the movable block is slidably installed on the sliding frame, the movable rod is slidably set on the movable block, the connecting frame is connected to the movable rod, the connecting frame is located in a transparent hollow frame, the fixed block is installed on the connecting frame, and through holes I, through holes II and through holes III are spaced apart on the fixed block, through holes I, through holes II and through holes III intersect with each other, and a light ball is set at the intersection of through holes I, through holes II and through holes III, the shielding mechanism is used to shield through holes I and through holes II, the driving mechanism is used to drive the sliding frame to move, the translation mechanism is used to drive the movable block to move, and the lifting mechanism is used to drive the connecting frame to lift and lower.

[0006] Further explanation: the shielding mechanism includes a shielding plate, an electromagnet and an iron plate. The shielding plates are slidably arranged on the connecting frame at intervals. The shielding plates shield through holes I and II. The electromagnet is connected to the shielding plate, and the iron plate is connected to the connecting frame.

[0007] To further explain, the shielding mechanism also includes an elastic rope, and two ends of the elastic rope are respectively connected to the connecting frame and the electromagnet.

[0008] To further explain, the driving mechanism includes a servo motor I and a one-way screw rod I. The servo motor I is installed on the guide rail frame, the one-way screw rod I is rotatably connected to the guide rail frame, the sliding frame is threadedly connected to the one-way screw rod I, and the output shaft of the servo motor I is connected to the end of the one-way screw rod I.

[0009] To further explain, the translation mechanism includes a servo motor II and a one-way screw II. The servo motor II is installed on the sliding frame, the one-way screw II is rotatably connected to the sliding frame, the movable block is threadedly connected to the one-way screw II, and the output shaft of the servo motor II is connected to the end of the one-way screw II.

[0010] To further explain, the lifting mechanism includes a servo motor III and a one-way screw III, the servo motor III is connected to the movable rod, one end of the one-way screw III is connected to the output shaft of the servo motor III, the other end of the one-way screw III is connected to the fixed block, and the movable block is threadedly connected to the one-way screw III.

[0011] Further description, it also includes a covering mechanism, which includes an electric push rod, a connecting plate and a cover plate. The electric push rod is symmetrically arranged on the transparent hollow frame, the connecting plate is connected to the telescopic rod of the electric push rod, the cover plate is connected to the connecting plate, and the cover plate is used to cover the top of the transparent hollow frame.

[0012] Further description, the covering mechanism also includes a sealing strip, and the cover plate is provided with a sealing strip, and the sealing strip is used for sealing between the cover plates.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention can form an XYZ coordinate axis in a colloidal suspension by using a transparent hollow frame, a laser emitter, a guide rail frame, a sliding frame, a movable block, a movable rod, a connecting frame, a fixed block, a light ball and a shielding mechanism. Then, by lighting up the light ball, a light spot can be formed on the inner wall of the transparent hollow frame, thereby establishing a point, line or surface on the XYZ coordinate axis. After that, by cooperating with a driving mechanism, a translation mechanism and a lifting mechanism, the light ball can be controlled to move, thereby simulating the movement of a point, line or surface in a three-dimensional body. In this way, it is convenient for teachers to express the concept of three-dimensional space, thereby facilitating learners to understand.

[0014] 2. The present invention can block the laser emitted by the laser emitter by setting a block, so that the laser emitted by the laser emitter can pass through the transparent hollow frame and cause harm to the human body.

[0015] 3. The present invention provides a covering mechanism, and can use a cover plate to cover the top of the transparent hollow frame, thereby shielding the colloidal suspension in the transparent hollow frame 2 for the teacher to use next time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 This is a cross-sectional view of the transparent hollow frame of the present invention from a first viewing angle.

[0018] Figure 3 This is a cross-sectional view of the transparent hollow frame of the present invention from a second viewing angle.

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the driving mechanism, translation mechanism and lifting mechanism of the present invention.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the movable rod, the fixed block and the one-way screw rod III of the present invention.

[0021] Figure 6 It is a cross-sectional view of the shielding mechanism of the present invention.

[0022] Figure 7It is a schematic diagram of the three-dimensional structure of the fixing block and the light ball of the present invention.

[0023] Figure 8 It is a three-dimensional structural schematic diagram of the covering mechanism of the present invention.

[0024] Fig. 9 This is a structural separation diagram of the cover plate of the present invention.

[0025] Markings in the accompanying drawings: 1: base, 2: transparent hollow frame, 3: laser transmitter, 4: stopper, 5: guide rail frame, 6: sliding frame, 7: movable block, 8: movable rod, 9: connecting frame, 10: fixed block, 101: through hole I, 102: through hole II, 103: through hole III, 11: light ball, 12: baffle plate, 13: electromagnet, 14: iron plate, 15: elastic rope, 16: servo motor I, 17: one-way screw rod I, 18: servo motor II, 19: one-way screw rod II, 20: servo motor III, 21: one-way screw rod III, 23: electric push rod, 24: connecting plate, 25: cover plate, 26: sealing strip. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Embodiment: A mathematics teaching auxiliary device, see Figure 1-Figure 7 As shown, it includes a base 1; it also includes a transparent hollow frame 2, a laser emitter 3, a stopper 4, a guide rail frame 5, a sliding frame 6, a movable block 7, a movable rod 8, a connecting frame 9, a fixed block 10, a light ball 11, a shielding mechanism, a driving mechanism, a translation mechanism and a lifting mechanism; the transparent hollow frame 2 is installed on the top of the base 1, and the material of the transparent hollow frame 2 is glass; three laser emitters 3 are respectively installed in the middle of the left side, the middle of the rear side and the middle of the top of the base 1, and the lasers emitted by the three laser emitters 3 form X-axis, Y-axis and Z-axis respectively after intersection. The lasers emitted by the laser emitter 3 on the rear side form an X-axis after intersection, the lasers emitted by the laser emitter 3 on the left side form a Y-axis after intersection, and the lasers emitted by the laser emitter 3 on the lower side form a Z-axis after intersection; blocks 4 are provided in the middle of the front side and the middle of the right side of the transparent hollow frame 2, the block 4 on the front side blocks the lasers emitted by the laser emitter 3 on the rear side, and the block 4 on the right side blocks the lasers emitted by the laser emitter 3 on the left side, so as to prevent the lasers emitted by the laser emitter 3 from passing through the transparent hollow frame 2 and causing harm to the human body; the guide rail frame 5 is installed on the transparent hollow frame 2 top; the sliding frame 6 is slidably mounted on the guide frame 5; the movable block 7 is slidably mounted on the sliding frame 6; the movable rod 8 is slidably arranged on the movable block 7; the connecting frame 9 is connected to the bottom end of the movable rod 8, and the connecting frame 9 is located inside the transparent hollow frame 2; the fixed block 10 is installed inside the connecting frame 9; the outer side of the fixed block 10 is spaced apart with through holes Ⅰ101, through holes Ⅱ102 and through holes Ⅲ103, the through holes Ⅰ101 are distributed horizontally, and the through holes Ⅰ101 are oriented to the left and right sides of the inside of the transparent hollow frame 2, and the through holes Ⅱ102 are distributed vertically, and the through holes Ⅰ101 are oriented to the transparent hollow frame 2, the through hole III 103 faces the inner front side of the transparent hollow frame 2, and the through holes I 101, II 102 and III 103 intersect each other; light balls 11 are arranged at the intersections of the through holes I 101, II 102 and III 103; the shielding mechanism is used to shield the through holes I 101 and II 102 so that the endpoints of the lines and the surfaces can be clearly displayed on the inner wall of the transparent hollow frame 2; the driving mechanism is used to drive the sliding frame 6 to move; the translation mechanism is used to drive the movable block 7 to move; and the lifting mechanism is used to drive the connection frame 9 to lift.

[0031] See also Figure 6 As shown, the shielding mechanism includes a shielding plate 12, an electromagnet 13, an iron plate 14 and an elastic rope 15; the shielding plate 12 is slidably arranged on the connecting frame 9 at intervals, and the shielding plate 12 shields the through hole Ⅰ101 and the through hole Ⅱ102; the electromagnet 13 is connected to the rear side of the shielding plate 12; the iron plate 14 is connected to the rear side of the connecting frame 9; and the two ends of the elastic rope 15 are respectively connected to the connecting frame 9 and the electromagnet 13.

[0032] See also Figure 4As shown, the driving mechanism includes a servo motor Ⅰ16 and a one-way screw rod Ⅰ17; the servo motor Ⅰ16 is installed on the right front side of the guide rail frame 5; the one-way screw rod Ⅰ17 is rotatably connected to the upper right side of the guide rail frame 5, the sliding frame 6 is threadedly connected to the one-way screw rod Ⅰ17, and the output shaft of the servo motor Ⅰ16 is connected to the front end of the one-way screw rod Ⅰ17.

[0033] See also Figure 4 As shown, the translation mechanism includes a servo motor II 18 and a one-way screw II 19; the servo motor II 18 is installed on the right side of the sliding frame 6; the one-way screw II 19 is rotatably connected to the inner side of the sliding frame 6, the movable block 7 is threadedly connected to the one-way screw II 19, and the output shaft of the servo motor II 18 is connected to the right end of the one-way screw II 19.

[0034] See also Figure 4 and Figure 5 As shown, the lifting mechanism includes a servo motor III20 and a one-way screw rod III21; the servo motor III20 is connected to the upper side of the movable rod 8, the upper end of the one-way screw rod III21 is connected to the output shaft of the servo motor III20, the lower end of the one-way screw rod III21 is connected to the fixed block 10, and the movable block 7 is threadedly connected to the one-way screw rod III21.

[0035] When in use, add a colloidal suspension (such as a phosphorus-containing laundry detergent solution, milk, certain nanoparticle suspensions, etc., which can better display the propagation path of the laser) into the transparent hollow frame 2, and then turn on the three laser emitters 3, so that the three laser emitters 3 emit lasers respectively, and the lasers penetrate into the colloidal suspension in the transparent hollow frame 2 to form a propagation path. When the three lasers intersect, the three lasers will form an XYZ coordinate axis. Then, the laser emitted by the rear laser emitter 3 is recorded as the X axis, the laser emitted by the left laser emitter 3 is recorded as the Y axis, and the laser emitted by the lower laser emitter 3 is recorded as the Z axis. Then the instructor can proceed to the next step according to needs; If it is necessary to simulate the movement of a point in a three-dimensional space, one of the light balls 11 is controlled to light up, and the electromagnets 13 of the light ball 11 in the horizontal and vertical directions are controlled to be energized, so that the electromagnets 13 generate magnetic force, so that the electromagnets 13 use the magnetic force to adsorb backwards on the iron plate 14, and the elastic rope 15 is deformed, thereby driving the shielding plate 12 to move backwards, so that the shielding plate 12 no longer blocks the corresponding through holes I 101 and II 102, so that the light emitted by the light ball 11 can be emitted through the corresponding through holes I 101, II 102 and III 103, so that the light emitted by the light ball 11 forms a propagation path in the colloidal suspension until the light emitted by the light ball 11 forms a light spot on the transparent hollow frame 2; If it is necessary to simulate the movement of a line or a surface in a three-dimensional space, the corresponding light ball 11 is controlled to light up, so that the corresponding lighted light ball 11 forms a line or a surface, and according to the corresponding endpoints of the line or surface (the endpoints here include the two ends of a line, or the intersection of two lines), the electromagnets 13 of the light ball 11 at the corresponding endpoint positions are controlled to be energized in the horizontal and vertical directions, so that the electromagnets 13 generate magnetic force, so that the electromagnets 13 use the magnetic force to adsorb backwards on the iron plate 14, and the elastic rope 15 is deformed, thereby driving the shielding plate 12 to move backwards, so that the shielding plate 12 no longer blocks the corresponding through hole I 101 and through hole II 102, so that the light emitted by the corresponding light ball 11 can be emitted through the corresponding through hole I 101, through hole II 102 and through hole III 103, so that the light emitted by the light ball 11 forms a propagation path in the colloidal suspension, until the light emitted by the light ball 11 forms a light spot on the transparent hollow frame 2; After that, the learner can determine the position of the light ball 11 by using the light spot formed on the transparent hollow frame 2. Then, the teacher drives the one-way screw rod Ⅰ17 to rotate forward and backward through the servo motor Ⅰ16, which can drive the sliding frame 6, the movable block 7, the movable rod 8, the connecting frame 9, the fixed block 10 and the light ball 11 to move forward and backward, or drives the one-way screw rod Ⅱ19 to rotate forward and backward through the servo motor Ⅱ18, which can drive the movable block 7, the movable rod 8, the connecting frame 9, the fixed block 10 and the light ball 11 to move left and right, or drives the one-way screw rod Ⅱ19 to rotate forward and backward through the servo motor Ⅱ18, which can drive the movable block 7, the movable rod 8, the connecting frame 9, the fixed block 10 and the light ball 11 to move left and right, or drives the one-way screw rod Ⅰ17 to rotate forward and backward through the servo motor Ⅰ16, which can drive the one-way screw rod Ⅰ17 to rotate forward and backward through the servo motor Ⅱ18, which can drive the one-way screw rod Ⅱ19 ... The motor III 20 drives the one-way screw III 21 to rotate forward and backward, which can drive the movable rod 8, the connecting frame 9, the fixed block 10 and the light ball 11 to move up and down. In this way, the position of the light ball 11 can be adjusted to simulate the movement of points, lines and surfaces in three-dimensional space. During this period, the light spots formed by the light ball 11 on the transparent hollow frame 2 will gradually change. In this way, learners only need to know the movement paths of points, lines and surfaces in three-dimensional space according to the changes of the light spots on the transparent hollow frame 2, thereby assisting learners in learning linear algebra. After the teacher finishes teaching, all the light balls 11 are controlled to be extinguished, and all the electromagnets 13 are controlled to be powered off, so that the electromagnets 13 lose their magnetic force. At this time, the elastic rope 15 returns to its original state, and the elastic rope 15 pulls the corresponding baffle plate 12 and the electromagnet 13 to move forward and reset, so that the corresponding baffle plate 12 blocks the through hole I 101 and the through hole II 102 again, and then adjusts the position of the light ball 11 to reset it, and finally turns off the three laser emitters 3.

[0036] See also Figure 8 and Fig. 9As shown, it also includes a covering mechanism, which includes an electric push rod 23, a connecting plate 24, a cover plate 25 and a sealing strip 26; the four electric push rods 23 are symmetrically arranged on the front and rear sides of the transparent hollow frame 2; a connecting plate 24 is connected between the telescopic rods of the two electric push rods 23 on the left, and a connecting plate 24 is also connected between the telescopic rods of the two electric push rods 23 on the right; the cover plate 25 is connected to the connecting plate 24, and the cover plate 25 is used to cover the top of the transparent hollow frame 2; the sealing strip 26 is connected to the side where the two cover plates 25 are close to each other, and the sealing strip 26 is used to seal between the two cover plates 25.

[0037] During use, the electric push rod 23 drives the connecting plate 24, the cover plate 25 and the sealing strip 26 to move away from each other, so that the cover plate 25 no longer covers the top of the transparent hollow frame 2, and then the colloidal suspension can be added into the transparent hollow frame 2; after the last use, the position of the light ball 11 is adjusted to reset, and then the electric push rod 23 drives the connecting plate 24, the cover plate 25 and the sealing strip 26 to move closer to each other and reset, so that the cover plate 25 covers the top of the transparent hollow frame 2 again, so that the colloidal suspension in the transparent hollow frame 2 can be shielded for the next use.

[0038] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mathematics teaching auxiliary device, comprising a base (1), characterized in that: The device also comprises a transparent hollow frame (2), a laser emitter (3), a stopper (4), a guide rail frame (5), a sliding frame (6), a movable block (7), a movable rod (8), a connecting frame (9), a fixed block (10), a light ball (11), a shielding mechanism, a driving mechanism, a translation mechanism and a lifting mechanism. The transparent hollow frame (2) is mounted on a base (1). Three laser emitters (3) are respectively mounted on the transparent hollow frame (2) and the base (1). The lasers emitted by the three laser emitters (3) respectively form an X-axis, a Y-axis and a Z-axis after intersection. The stopper (4) is mounted on the transparent hollow frame (2). The stopper (4) is used to block the laser. The guide rail frame (5) is mounted on the transparent hollow frame (2). The sliding frame (6) is slidably mounted on the guide rail frame (5). The movable block (7) is slidably mounted on the sliding frame (6). A movable rod (8) is slidably arranged on the movable block (7), a connecting frame (9) is connected to the movable rod (8), the connecting frame (9) is located in the transparent hollow frame (2), a fixed block (10) is installed on the connecting frame (9), a through hole I (101), a through hole II (102) and a through hole III (103) are spaced apart on the fixed block (10), the through hole I (101), the through hole II (102) and the through hole III (103) intersect with each other, a light ball (11) is arranged at the intersection of the through holes I (101), the through holes II (102) and the through holes III (103), a shielding mechanism is used to shield the through holes I (101) and the through holes II (102), a driving mechanism is used to drive the sliding frame (6) to move, a translation mechanism is used to drive the movable block (7) to move, and a lifting mechanism is used to drive the connecting frame (9) to lift.

2. A mathematics teaching auxiliary device according to claim 1, characterized in that the shielding The mechanism comprises a shielding plate (12), an electromagnet (13) and an iron plate (14); the shielding plate (12) is slidably arranged on the connection frame (9) at intervals; the shielding plate (12) shields the through hole I (101) and the through hole II (102); the electromagnet (13) is connected to the shielding plate (12); and the iron plate (14) is connected to the connection frame (9).

3. A mathematics teaching auxiliary device according to claim 2, characterized in that the shielding The mechanism also includes an elastic rope (15), and two ends of the elastic rope (15) are respectively connected to the connection frame (9) and the electromagnet (13).

4. A mathematics teaching auxiliary device according to claim 3, characterized in that: The driving mechanism comprises a servo motor I (16) and a one-way screw rod I (17), wherein the servo motor I (16) is mounted on the guide rail frame (5), the one-way screw rod I (17) is rotatably connected to the guide rail frame (5), the sliding frame (6) is threadedly connected to the one-way screw rod I (17), and the output shaft of the servo motor I (16) is connected to the end of the one-way screw rod I (17).

5. A mathematics teaching auxiliary device according to claim 4, characterized in that: The translation mechanism comprises a servo motor II (18) and a one-way screw rod II (19), the servo motor II (18) is mounted on the sliding frame (6), the one-way screw rod II (19) is rotatably connected to the sliding frame (6), the movable block (7) is threadedly connected to the one-way screw rod II (19), and the output shaft of the servo motor II (18) is connected to the end of the one-way screw rod II (19).

6. A mathematics teaching auxiliary device according to claim 5, characterized in that: The lifting mechanism comprises a servo motor III (20) and a one-way screw rod III (21), the servo motor III (20) is connected to the movable rod (8), one end of the one-way screw rod III (21) is connected to the output shaft of the servo motor III (20), the other end of the one-way screw rod III (21) is connected to the fixed block (10), and the movable block (7) is threadedly connected to the one-way screw rod III (21).

7. A mathematics teaching auxiliary device according to claim 6, characterized in that: The invention also comprises a covering mechanism, which comprises an electric push rod (23), a connecting plate (24) and a cover plate (25); the electric push rod (23) is symmetrically arranged on the transparent hollow frame (2); the connecting plate (24) is connected to the telescopic rod of the electric push rod (23); the cover plate (25) is connected to the connecting plate (24); and the cover plate (25) is used to cover the top of the transparent hollow frame (2).

8. A mathematics teaching auxiliary device according to claim 7, characterized in that: The covering mechanism further comprises a sealing strip (26). The sealing strip (26) is arranged on the cover plate (25). The sealing strip (26) is used for sealing between the cover plates (25).

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