Educational toy for teaching

Abstract

The utility model relates to the technical field of toys, and discloses an educational toy for teaching, the educational toy is mainly composed of a flat plate assembly, five positioning grooves, positioning pieces, movable pieces and rubber ropes, the positioning grooves are formed in the front face of a fixed plate, threads are formed in the inner walls of the positioning grooves, the five positioning grooves form a straight line, and the movable pieces are arranged on the front face of the fixed plate. The number of the positioning pieces is three, the three positioning pieces are movably installed on the positioning groove, the movable piece is movably installed on the arc hole, and the three positioning pieces and the movable piece are connected through a rubber rope. The three positioning pieces are installed on the B point groove, the C point groove and the D point groove in a threaded mode, the movable pieces are movably installed on the arc holes, and the rubber ropes are arranged between the three positioning pieces and the movable pieces, so that two triangles with different areas are formed, related knowledge points of the triangular areas can be visually taught to children, teaching entertainment is achieved, and the teaching efficiency is improved. Therefore, math interests of children are cultivated, and math knowledge is increased.

Description

Technical Field

[0001] The present application relates to the technical field of toys, and in particular to an educational toy for teaching. Background Art

[0002] Educational toys are tools that allow people to develop intelligence and increase wisdom during the process of playing. Educational toys play a very important role in human development and evolution. People who often play educational toys have higher open-minded thinking ability. Moreover, educational toys are suitable for a wide range of people. Children playing with educational toys can help improve their intelligence, the elderly playing with educational toys can reduce the incidence of Alzheimer's disease, and adults playing with educational toys can relax their body and mind.

[0003] There are many kinds of educational toys on the market, but they are basically helpful for popular science education, but few toys involve mathematical geometry knowledge education such as mathematical formulas. Therefore, it is urgent to design an educational toy that can cultivate children's interest in mathematics, increase mathematical knowledge, teach and entertain, and develop children's intelligence. Summary of the invention

[0004] The present application proposes an educational toy for teaching, which has the advantages of effectively popularizing mathematical geometry knowledge, cultivating children's interest in mathematics and increasing their mathematical knowledge, and is used to solve the problem that there are few toys related to mathematical geometry knowledge on the market.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solution: an educational toy for teaching, comprising:

[0006] A flat plate assembly, used for displaying geometric shapes, the flat plate assembly is composed of a fixed plate, a fixed block, an arc groove and an arc hole, the four corners of the back side of the fixed plate are fixedly connected with the fixed blocks, the lower half of the front side of the fixed plate is provided with an arc groove, and the upper half of the front side of the fixed plate is provided with an arc hole, the arc groove and the arc hole together form a circle, and the centers of the two circles are located at the same point, the arc length of the arc groove is longer than that of the arc hole, and the distance between the inner and outer walls of the arc groove is smaller than the distance between the inner and outer walls of the arc hole;

[0007] Positioning groove, the front of the fixing plate is provided with a positioning groove, and the inner wall of the positioning groove is provided with a thread, the number of the positioning grooves is five, and the five positioning grooves form a straight line, and the five positioning grooves are at the same height as the center of the arc groove and the arc hole, and are used for threaded installation of the positioning piece;

[0008] Positioning members, the number of the positioning members is three, and the three positioning members are movably mounted on the positioning grooves, and are used to serve as two vertices of the triangle;

[0009] A movable member, wherein the movable member is movably mounted on the arc hole, and the position of the movable member is called point A, which is used to serve as one of the vertices of the triangle;

[0010] The three positioning members and the one movable member are connected by a rubber rope, and are used to serve as the sides of a triangle.

[0011] Furthermore, the positioning groove includes:

[0012] O-point groove, the positioning groove located at the center of the arc groove and the arc hole is called the O-point groove;

[0013] B-point groove, the positioning groove located outside the circle formed by the arc groove and the arc hole is called B-point groove;

[0014] C-point slot, the positioning slot located between the O-point slot and the B-point slot is called the C-point slot, and the C-point slot is located on the arc slot, and the distance between the O-point slot and the C-point slot is equal to the radius of the circle;

[0015] D-point slot, the positioning slot located between the O-point slot and the C-point slot is called the D-point slot, and the distance between the B-point slot and the C-point slot is twice the distance between the C-point slot and the D-point slot;

[0016] The E-point slot, a positioning slot that is symmetrical to the C-point slot, is called the E-point slot, and the distance between the E-point slot and the O-point slot is equal to the distance between the C-point slot and the O-point slot.

[0017] Furthermore, the positioning member includes:

[0018] A positioning block, wherein the positioning block is cylindrical;

[0019] A positioning long rod, one end of which is fixedly connected to the positioning block, the positioning long rod is cylindrical, and the diameter of the positioning long rod is smaller than that of the positioning block, the length of the positioning long rod is longer than that of the positioning block, and the wall surface of the positioning long rod is provided with two through holes, and the two through holes are not connected;

[0020] A positioning screw, the other end of the positioning long rod is fixedly connected to the positioning screw, the positioning screw is cylindrical, and the diameter of the positioning screw is equal to the diameter of the positioning long rod, the outer wall of the positioning screw is provided with a thread, and the positioning screw is threadedly sleeved with the positioning groove.

[0021] Furthermore, the movable part comprises:

[0022] A movable bolt, the movable bolt is composed of a movable block and a movable rod, and the movable block is fixedly connected to the movable rod, the movable block is located on the front of the fixed plate, and the movable rod is movably engaged with the arc hole, and the wall surface of the movable rod located on the front of the fixed plate is provided with three through holes, and the three through holes are not connected to each other; the wall surface of the movable rod located on the back of the fixed plate is provided with a thread;

[0023] A movable nut is movably sleeved with the movable bolt.

[0024] Furthermore, the number of the rubber ropes is four, and the rubber ropes are elastic. One of the rubber ropes passes through the through holes of the three positioning pieces in sequence, and two ends of the rubber rope form knots and are movably connected to the two positioning pieces respectively. One end of one of the rubber ropes is movably connected to the positioning piece located on the B point slot, and the other end is movably connected to the first through hole of the movable piece. One end of one of the rubber ropes is movably connected to the positioning piece located on the C point slot, and the other end is movably connected to the second through hole of the movable piece. One end of one of the rubber ropes is movably connected to the positioning piece located on the D point slot, and the other end is movably connected to the third through hole of the movable piece.

[0025] This application has the following beneficial effects:

[0026] The present application provides an educational toy for teaching. By threading three positioning parts on the B-point slot, the C-point slot and the D-point slot, movably installing the movable part on the arc hole, and arranging rubber ropes between the three positioning parts and the movable part, two triangles with different areas are formed. The teacher can teach the relevant knowledge of triangles according to needs. For example, since the distance between the B-point slot and the C-point slot is twice the distance between the C-point slot and the D-point slot, according to the triangle area formula S=1 / 2×ah, no matter where the movable part rotates around the arc hole, the area of ​​the triangle formed by the movable part, the B-point slot and the C-point slot is always twice the area of ​​the triangle formed by the movable part, the C-point slot and the D-point slot. This helps to intuitively teach the relevant knowledge points of the triangle area to children, and entertain and educate, thereby cultivating children's interest in mathematics and increasing their mathematical knowledge.

[0027] By threading three positioning parts on the O-point slot, the C-point slot and the E-point slot, movably installing the movable part on the arc hole, and setting rubber ropes between the three positioning parts and the movable part, two triangles with the same area are formed, so that the teacher can teach the relevant knowledge of circles and triangles. In summary, the positioning parts of the device can be installed on different positioning slots according to actual needs, so as to obtain specific demonstrations of different geometric knowledge, and the scope of use is wider.

[0028] The threaded installation method of the positioning parts and movable parts can effectively train the hands-on assembly ability of children and adolescents, and the installation method of the rubber rope forming a knot can easily replace the rubber rope, effectively improving the replacement efficiency of the positioning parts, movable parts and rubber ropes and extending their service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0030] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0031] Figure 1 It is the overall front perspective structural diagram of the present invention;

[0032] Figure 2 It is the overall rear-view stereoscopic structural diagram of the present invention;

[0033] Figure 3 For the present invention Figure 1 Planar structural diagram of the component;

[0034] Figure 4 It is a planar structural diagram of the present invention when the position of the movable part is changed;

[0035] Figure 5 It is a three-dimensional structural diagram of the flat panel assembly in the present invention;

[0036] Figure 6 It is a three-dimensional structural diagram of the positioning member, the movable member and the rubber rope in the present invention;

[0037] Figure 7 It is a three-dimensional structural diagram of the positioning member, the movable member and the rubber rope when the positioning member and the movable member are in a cross-sectional state in the present invention;

[0038] Figure 8 It is a three-dimensional structural diagram of the positioning part and the movable part in the present invention.

[0039] In the figure: 1. Flat plate assembly; 10. Fixed block; 11. Fixed plate; 12. Arc groove; 13. Arc hole; 2. Positioning groove; 21. O point groove; 22. B point groove; 23. C point groove; 24. D point groove; 25. E point groove; 3. Positioning piece; 31. Positioning block; 32. Positioning long rod; 33. Positioning screw; 4. Movable piece; 41. Movable bolt; 411. Movable block; 412. Movable rod; 42. Movable nut; 5. Rubber rope. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] An educational toy for teaching, comprising:

[0042] See also Figure 1-Figure 5, a flat plate assembly 1, is used to display geometric shapes and teach mathematical geometry knowledge. The flat plate assembly 1 is composed of a fixed plate 11, a fixed block 10, an arc groove 12 and an arc hole 13. The four corners of the back of the fixed plate 11 are fixedly connected with the fixed block 10, which can support the flat plate assembly 1 and the movable part 4 when the flat plate assembly 1 is placed on the desktop, so as not to affect the movement of the movable part 4 on the flat plate assembly 1. An arc groove 12 is provided in the lower half of the front side of the fixed plate 11, and an arc hole 13 is provided in the upper half of the front side of the fixed plate 11. The arc groove 12 and the arc hole 13 together form a circle, and the centers of the two circles are located at the same point, which can prompt the user to intuitively feel the characteristics of the circle. The arc length of the arc groove 12 is longer than that of the arc hole 13, that is, the two ends of the arc hole 13 are equal in height and are not at the same height as the center of the circle, which helps the movable part 4 and the positioning part 3 to form a triangle. The distance between the inner and outer walls of the arc groove 12 is smaller than the distance between the inner and outer walls of the arc hole 13, which can effectively limit the movement range of the movable part 4, so that the movable part 4 can only move in the arc hole 13.

[0043] See also Figure 1-Figure 5, positioning groove 2, the front of the fixing plate 11 is provided with a positioning groove 2, and the inner wall of the positioning groove 2 is provided with a thread, the number of the positioning grooves 2 is five, and the five positioning grooves 2 form a straight line, the five positioning grooves 2 are at the same height as the center of the arc groove 12 and the arc hole 13, and are used for threaded installation of the positioning member 3, and ensure that the bases of the two triangles formed by the multiple positioning grooves 2 are on the same straight line, specifically, the positioning groove 2 located at the center of the arc groove 12 and the arc hole 13 is called the O-point groove 21, which is used to determine the center The positioning groove 2 located outside the circle formed by the arc groove 12 and the arc hole 13 is called the B-point groove 22, the positioning groove 2 located between the O-point groove 21 and the B-point groove 22 is called the C-point groove 23, and the C-point groove 23 is located on the arc groove 12, and the distance between the O-point groove 21 and the C-point groove 23 is equal to the radius of the circle, which helps to demonstrate the relevant knowledge of the circle, the positioning groove 2 located between the O-point groove 21 and the C-point groove 23 is called the D-point groove 24, and the distance between the B-point groove 22 and the C-point groove 23 is the C-point groove 23 to D point slot 24, when the three positioning members 3 are respectively installed on B point slot 22, C point slot 23 and D point slot 24, since the distance between B point slot 22 and C point slot 23 is twice the distance between C point slot 23 and D point slot 24, and according to the relevant knowledge of triangles, the two adjacent triangles formed have different areas due to different bases and the same height, and the area of ​​one triangle is always twice the area of ​​the other triangle. The positioning slot 2 symmetrical to the C point slot 23 is called E point slot 25, and the distance between E point slot 25 and O point slot 21 is equal to the distance between C point slot 23 and O point slot 21. When the three positioning members 3 are respectively installed on C point slot 23, O point slot 21 and E point slot 25, since the distance between E point slot 25 and O point slot 21 is equal to the distance between C point slot 23 and O point slot 21, and according to the relevant knowledge of circles and triangles, the two adjacent triangles formed have equal areas due to equal bases and the same height.

[0044] See also Figure 1-Figure 4 , Figure 6-Figure 8, positioning member 3, the number of positioning members 3 is three, and the three positioning members 3 are movably installed on the positioning groove 2, used to serve as two vertices of the triangle, and cooperate with the rubber rope 5 to form a complete triangle, the positioning member 3 is composed of a positioning block 31, a positioning long rod 32 and a positioning screw 33, the positioning block 31 is cylindrical, which helps the user to install the positioning member 3 on the positioning groove 2, one end of the positioning long rod 32 is fixedly connected to the positioning block 31, the positioning long rod 32 is cylindrical, and the diameter of the positioning long rod 32 is smaller than that of the positioning block 31, and the length of the positioning long rod 32 is longer than that of the positioning block 31, It helps to improve the ease of use of the positioning piece 3. The wall surface of the positioning long rod 32 is provided with two through holes, and the two through holes are not connected, which helps to connect one end of the two rubber ropes 5 to a positioning piece 3. The other end of the positioning long rod 32 is fixedly connected to the positioning screw 33. The positioning screw 33 is cylindrical, and the diameter of the positioning screw 33 is equal to the diameter of the positioning long rod 32. The outer wall of the positioning screw 33 is provided with a thread, and the positioning screw 33 is threadedly sleeved with the positioning groove 2, which helps to flexibly install the positioning piece 3 on the positioning groove 2, thereby effectively training children's hands-on assembly ability.

[0045] See also Figure 1-Figure 4 , Figure 6-Figure 8 , movable part 4, movable part 4 is movably installed on the arc hole 13, the position of movable part 4 is called point A, which is used to act as one of the vertices of the triangle and cooperate with the rubber rope 5 to form a complete triangle, the movable part 4 is composed of a movable bolt 41 and a movable nut 42, the movable bolt 41 is composed of a movable block 411 and a movable rod 412, and the movable block 411 is fixedly connected with the movable rod 412, the movable block 411 is located on the front side of the fixed plate 11, and the movable rod 412 is movably engaged with the arc hole 13, which helps the movable bolt 41 to move freely on the arc hole 13, the wall surface of the movable rod 412 located on the front side of the fixed plate 11 is provided with three through holes, and the three through holes are not connected, which helps to connect one end of the three rubber ropes 5 to one movable part 4, the wall surface of the movable rod 412 located on the back side of the fixed plate 11 is provided with threads, which helps to achieve stable installation of the movable part 4, the movable rod 412 is movably sleeved with the movable nut 42 through threads, which can effectively connect the movable bolt 41 and the movable nut 42, so that the movable part 4 can be installed within the range of the arc hole 13.

[0046] See also Figure 1-Figure 4 , Figure 6-Figure 7, rubber rope 5, three positioning members 3 and one movable member 4 are connected by rubber rope 5, which is used to act as the side of a triangle, and cooperates with three positioning members 3 and one movable member 4 to form two adjacent triangles. The number of rubber ropes 5 is four, and the rubber ropes 5 are elastic and can effectively stretch and deform. When the three positioning members 3 are respectively installed on the B point slot 22, the C point slot 23 and the D point slot 24, one rubber rope 5 passes through the through holes of the three positioning members 3 in sequence, and the two ends of the rubber rope 5 form knots and are respectively movably connected to the two positioning members 3. Since the device is used During use, the rubber rope 5 does not move, which helps to extend the service life of the rubber rope 5, while the other three 5 are often moved and easily damaged, and can be replaced according to needs. The three rubber ropes 5 are respectively configured as follows: one end of a rubber rope 5 is movably connected to the positioning member 3 located on the B point groove 22, and the other end is movably connected to the first perforation of the movable member 4, that is, the vertex movable member 4 and the B point groove 22 are connected; one end of a rubber rope 5 is movably connected to the positioning member 3 located on the C point groove 23, and the other end is movably connected to the second perforation of the movable member 4. That is, the vertex movable part 4 and the C point slot 23 are connected, one end of a rubber rope 5 is movably connected to the positioning part 3 located on the D point slot 24, and the other end is movably connected to the third perforation of the movable part 4, that is, the vertex movable part 4 and the D point slot 24 are connected, thereby forming four rubber ropes 5 that can form two adjacent triangles, namely, a triangle with vertices being the movable part 4, the B point slot 22 and the C point slot 23 and a triangle with vertices being the movable part 4, the C point slot 23 and the D point slot 24. At this time, since the distance between the B point slot 22 and the C point slot 23 is twice the distance between the C point slot 23 and the D point slot 24, and according to the triangle area formula S=1 / 2×ah, the two adjacent triangles have the same height because the base of one triangle is twice that of the other triangle, so no matter where the movable part 4 rotates around the arc hole 13, the area of ​​one triangle is always twice the area of ​​the other triangle. Therefore, the instructor can teach the relevant knowledge of triangles according to needs, which is helpful to intuitively teach the relevant knowledge points of the area of ​​triangles to young children, and entertain and educate, thereby cultivating children's interest in mathematics and increasing their mathematical knowledge.

[0047] When the three positioning members 3 are respectively installed on the C point slot 23, the O point slot 21 and the E point slot 25, a rubber rope 5 passes through the through holes of the three positioning members 3 in sequence, and the two ends of the rubber rope 5 form knots and are movably connected to the two positioning members 3 respectively. The other three rubber ropes 5 are respectively set as follows: one end of a rubber rope 5 is movably connected to the positioning member 3 located on the C point slot 23, and the other end is movably connected to the first through hole of the movable member 4, that is, the vertex movable member 4 and the C point slot 23 are connected; one end of a rubber rope 5 is movably connected to the positioning member 3 located on the O point slot 21, and the other end is movably connected to the second through hole of the movable member 4, that is, the vertex movable member 4 and the O point slot 21 are connected; one end of a rubber rope 5 is movably connected to the positioning member 3 located on the E point slot 25, and the other end is movably connected to the third through hole of the movable member 4. That is, the vertex movable part 4 and the E-point slot 25 are connected, so that the four rubber ropes 5 can form two adjacent triangles, namely, the triangle with the vertices of the movable part 4, the O-point slot 21 and the C-point slot 23 and the triangle with the vertices of the movable part 4, the O-point slot 21 and the E-point slot 25. At this time, according to the relevant knowledge of the circle, it can be known that the distance between the O-point slot 21 and the C-point slot 23 is equal to the distance between the O-point slot 21 and the E-point slot 25, and according to the triangle area formula S=1 / 2×ah, the two adjacent triangles have the same height because of the equal bases, so no matter where the movable part 4 rotates around the arc hole 13, the areas of the two triangles are always equal. Therefore, the teacher can teach the relevant knowledge of geometry according to the needs, which is helpful to teach the relevant knowledge points of geometry to young children intuitively, and entertain and educate, so as to cultivate children's interest in mathematics and increase mathematical knowledge.

[0048] The working principle of the method of the present invention is as follows:

[0049] When the user needs to assemble the device, the positioning member 3, the movable member 4 and the rubber rope 5 can be installed according to actual needs, such as forming a triangle whose vertices are the movable member 4, the B point slot 22 and the C point slot 23 and a triangle whose vertices are the movable member 4, the C point slot 23 and the D point slot 24. The specific operation is to first thread the three positioning members 3 on the B point slot 22, the C point slot 23 and the D point slot 24 respectively, disassemble the movable member 4 and movably install it on the arc hole 13, then pass a rubber rope 5 through the three positioning members 3 and form a knot to fix it, fix one end of the other three rubber ropes 5 on the movable member 4 with a knot, and fix the other ends of the other three rubber ropes 5 on the three positioning members 3 with a knot. On the positioning member 3, two adjacent triangles are formed. At this time, since the distance between the point B slot 22 and the point C slot 23 is twice the distance between the point C slot 23 and the point D slot 24, according to the triangle area formula S=1 / 2×ah, no matter where the user rotates the movable member 4 around the arc hole 13, the heights of the two triangles are always equal, and the ratio of the bases remains unchanged. Therefore, the area of ​​the triangle formed by the movable member 4, the point B slot 22 and the point C slot 23 is always twice the area of ​​the triangle formed by the movable member 4, the point C slot 23 and the point D slot 24. In summary, educators can teach children the relevant knowledge of mathematical geometry intuitively according to their needs, and use education and entertainment to cultivate children's interest in mathematics and increase their mathematical knowledge.

Claims

1. An educational toy for teaching, characterized in that: include: A flat plate assembly (1) for displaying geometric shapes, the flat plate assembly (1) comprising a fixed plate (11), a fixed block (10), an arc groove (12) and an arc hole (13); the four corners of the back side of the fixed plate (11) are fixedly connected to the fixed blocks (10); the lower half of the front side of the fixed plate (11) is provided with an arc groove (12); and the upper half of the front side of the fixed plate (11) is provided with an arc hole (13); the arc groove (12) and the arc hole (13) together form a circle, and the centers of the two circles are located at the same point; the arc length of the arc groove (12) is longer than that of the arc hole (13); and the distance between the inner and outer walls of the arc groove (12) is smaller than the distance between the inner and outer walls of the arc hole (13); A positioning groove (2), wherein the front surface of the fixing plate (11) is provided with a positioning groove (2), and the inner wall of the positioning groove (2) is provided with a thread, the number of the positioning grooves (2) is five, and the five positioning grooves (2) form a straight line, and the centers of the five positioning grooves (2) and the arc groove (12) and the arc hole (13) are at the same height, and are used for threaded installation of the positioning piece (3); Positioning members (3), the number of the positioning members (3) is three, and the three positioning members (3) are movably mounted on the positioning groove (2) and are used to serve as two vertices of the triangle; A movable member (4), wherein the movable member (4) is movably mounted on the arc hole (13), and the position of the movable member (4) is called point A, and is used to serve as one of the vertices of the triangle; A rubber rope (5) is used to connect the three positioning members (3) and a movable member (4) and is used to serve as the side of a triangle.

2. An educational toy for teaching according to claim 1, characterized in that: The positioning groove (2) comprises: O-point groove (21), the positioning groove (2) located at the center of the arc groove (12) and the arc hole (13) is called the O-point groove (21); B-point groove (22), the positioning groove (2) located outside the circle formed by the arc groove (12) and the arc hole (13) is called B-point groove (22); C-point groove (23), the positioning groove (2) located between the O-point groove (21) and the B-point groove (22) is called the C-point groove (23), and the C-point groove (23) is located on the arc groove (12), and the distance between the O-point groove (21) and the C-point groove (23) is equal to the radius of the circle; D point groove (24), the positioning groove (2) located between the O point groove (21) and the C point groove (23) is called the D point groove (24), and the distance between the B point groove (22) and the C point groove (23) is twice the distance between the C point groove (23) and the D point groove (24); The E-point groove (25), the positioning groove (2) symmetrically located with respect to the C-point groove (23) is called the E-point groove (25), and the distance between the E-point groove (25) and the O-point groove (21) is equal to the distance between the C-point groove (23) and the O-point groove (21).

3. An educational toy for teaching according to claim 2, characterized in that: The positioning member (3) comprises: A positioning block (31), wherein the positioning block (31) is cylindrical; A positioning long rod (32), one end of which is fixedly connected to the positioning block (31), the positioning long rod (32) is cylindrical, the diameter of the positioning long rod (32) is smaller than that of the positioning block (31), the length of the positioning long rod (32) is longer than that of the positioning block (31), and the wall surface of the positioning long rod (32) is provided with two through holes, and the two through holes are not connected; A positioning screw (33), the other end of the positioning long rod (32) is fixedly connected to the positioning screw (33), the positioning screw (33) is cylindrical, and the diameter of the positioning screw (33) is equal to the diameter of the positioning long rod (32), the outer wall of the positioning screw (33) is provided with a thread, and the positioning screw (33) is threadedly sleeved with the positioning groove (2).

4. The educational toy for teaching according to claim 1, characterized in that: The movable part (4) comprises: A movable bolt (41), the movable bolt (41) is composed of a movable block (411) and a movable rod (412), the movable block (411) and the movable rod (412) are fixedly connected, the movable block (411) is located on the front side of the fixed plate (11), and the movable rod (412) is movably engaged with the arc hole (13), three through holes are formed on the wall surface of the movable rod (412) located on the front side of the fixed plate (11), and the three through holes are not connected to each other; a thread is formed on the wall surface of the movable rod (412) located on the back side of the fixed plate (11); A movable nut (42) is movably sleeved with the movable bolt (41).

5. The educational toy for teaching according to claim 1, characterized in that: The number of the rubber ropes (5) is four, and the rubber ropes (5) are elastic. One of the rubber ropes (5) passes through the through holes of the three positioning members (3) in sequence, and two ends of the rubber rope (5) form knots and are movably connected to two positioning members (3) respectively. One end of the rubber rope (5) is movably connected to the positioning member (3) located on the B point slot (22), and the other end is movably connected to the first through hole of the movable member (4). One end of the rubber rope (5) is movably connected to the positioning member (3) located on the C point slot (23), and the other end is movably connected to the second through hole of the movable member (4). One end of the rubber rope (5) is movably connected to the positioning member (3) located on the D point slot (24), and the other end is movably connected to the third through hole of the movable member (4).

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