Probability model teaching aid for mathematics teaching

Abstract

The invention discloses a probability model teaching aid for mathematics teaching, which structurally comprises a clamping ring, a turntable, a chassis and a pointer, the turntable is embedded and fixed at the upper end of the chassis, the clamping ring is mounted on the inner side of the surface of the turntable, and the pointer is embedded and fixed at the outer side of the upper end of the middle of the turntable. The blocking plate is clamped in the interval between the ball blocks under the elastic force of the elastic block, then the two movable plates are adjusted after getting close to each other, probability adjustment is carried out on the plates placed on the surface of the rotating plate, flexible adjustment is carried out during probability equal division, the probability teaching range is prevented from being small, a stress block is manually pressed, and therefore a supporting block is pushed by a sliding block, and the probability teaching efficiency is improved. The arc-shaped plate slides in the plastic shell, then the rubber plate makes contact with and extrudes the balls on the outer side, the rubber plate conducts friction blocking on sliding rotation of the balls, the friction force of the balls on the inner side of the rotating plate is increased, the rotating plate is fixed, the friction fixing effect is achieved, and then the effect of rapidly and stably stopping the rotating plate is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of teaching model teaching aids, and more specifically, to a probability model teaching aid for mathematics teaching. Background Art

[0002] The explanation of mathematical knowledge points must rely on certain physical objects or models, which can intuitively explain the process of knowledge generation, occurrence, and development. If students do not have intuitive demonstrations of teaching aids when learning knowledge, and do not have the help of intuitive images, then their knowledge may not be solid and only remain on the surface. Therefore, the probability model mold used in teaching can be used for probability demonstration in mathematics teaching. The probability model teaching aid can use manual rotation to demonstrate and analyze the position pointed by the pointer, and intuitively demonstrate the probability of the pointed position.

[0003] However, the probability on the probability model teaching aids needs to be divided equally, and the plates need to be replaced when dividing into three or four equal parts. The size of the plates is limited, and only a few ways of division can be performed. The size of the plates cannot be adjusted according to the required division state, so the degree of division is limited to a certain range, affecting the practical effect of probability teaching. In addition, the teaching aid turntable rotates for too long, and is easily offset by the rotation force when manually stopping in an emergency, and cannot perform a stable and fast emergency stop. Summary of the invention

[0004] The technical solution adopted by the present invention to achieve the technical purpose is: a probability model teaching aid for mathematics teaching, whose structure includes a snap ring, a turntable, a chassis, and a pointer. The turntable is embedded in the upper end of the chassis, the snap ring is installed on the inner side of the turntable surface, and the pointer is embedded in the outer side of the middle upper end of the turntable. The turntable is provided with a plate, a central mechanism, a ball, a rotating plate, and a clamping block. The central mechanism is embedded in the upper end of the clamping block, and the ball is movably engaged with the outer side of the central mechanism. The ball is slidingly matched with the inner side of the rotating plate. The plate is engaged inside the upper end of the rotating plate, and the clamping block is embedded in the upper end of the chassis. The snap ring is installed on the inner side of the rotating plate surface, and the pointer is embedded on the outer side of the central mechanism. The snap ring is located on the outer side of the plate. The snap ring is made of rubber and has the characteristic of high elasticity. A ball is provided on the upper end of the clamping block, which slides with the lower end of the rotating plate.

[0005] As a further improvement of the present invention, the plate is provided with a pull rod, a first spring, a sealed plate, a movable plate, and a second spring. The sealed plate is attached to the inner side of the movable plate, the second spring is embedded in the inner side of the movable plate, the pull rod is installed on the inner side of the movable plate, the first spring is embedded in the inner side of the movable plate, the movable plate is engaged with the upper end of the rotating plate, the sealed plate is made of sponge material, and two sealed plates are provided, distributed in the upper and lower layers of the movable plate, the movable plate is provided with two, symmetrically distributed on the left and right, the first spring and the second spring have the same elasticity, and the pull rod is located at the center axis position of the first spring and the second spring.

[0006] As a further improvement of the present invention, the pull rod is provided with a connecting rod, a friction rod, a force plate, a ball block, and a hollow tube. The ball block is engaged with the inner side of the hollow tube, the hollow tube is embedded in the inner side of the force plate, the connecting rod is installed on the outer side of the force plate, the friction rod is embedded in the inner side of the force plate, the friction rod is movably engaged with the inner side of the hollow tube, the connecting rod is installed on the inner side of the movable plate, the force plates are provided with two, which are arranged horizontally, the connecting rod is made of rubber and has the characteristics of deformation and activity, and the ball blocks are provided in two rows, which are evenly distributed in the middle position of the inner side of the ball blocks.

[0007] As a further improvement of the present invention, the friction rod is provided with a spring block, a round rod and a blocking plate. The spring block is attached to the inner side of the blocking plate, the blocking plate is installed on the outer end of the round rod, and the round rod is embedded in the inner side of the force-bearing plate. The blocking plate is made of aluminum alloy and is in a circular ring shape with a notch on the left side, which has the characteristic of strong toughness. The outer side of the blocking plate is relatively rough and has the characteristic of high friction. The spring block is made of rubber and has the characteristic of high elasticity.

[0008] As a further improvement of the present invention, the central mechanism is provided with a plastic shell, a friction block, a sliding block, a third spring, and a force block. The friction block is embedded in the outside of the sliding block, the third spring is installed on the side of the sliding block, the upper end of the third spring is embedded in the lower end of the force block, the force block is limited and movably engaged on the inner side of the plastic shell, the plastic shell is embedded in the upper end of the clamping block, the ball is movably engaged on the outside of the plastic shell, the ball is movably engaged with the friction block, six third springs are provided, which are evenly distributed in a ring with the force block as the center, and the third spring is tilted outward at 40 degrees.

[0009] As a further improvement of the present invention, the friction block is provided with a rubber plate, a support block, and an arc plate. The arc plate is embedded in the outside of the support block and adhered to the outside. The support block is installed on the outside of the sliding block. The outside of the rubber plate is in a triangular rack state and has the characteristic of large friction. Beneficial Effects

[0010] 1. In the present invention, the two force-bearing plates in the horizontal pulling rod are squeezed against each other or move in opposite directions, and then the movable plates are pulled closer to each other through the connecting rod. When the friction rod stops moving, the blocking plate is engaged in the gap between the ball blocks under the elastic force of the spring block, so as to fix the elastic force. Then, the size of the two movable plates is adjusted after they are close to each other, so that the movable plates maintain the fan-shaped size adjustment, and the probability of the plates placed on the surface of the rotating plate is adjusted to achieve flexible adjustment when the probability is equally divided, so as to prevent the range of probability teaching from being small.

[0011] 2. In the present invention, the force-bearing block is manually pressed to squeeze the third spring, pushing the sliding block to move outward inside the plastic shell, thereby driving the friction block to squeeze the ball, so that the support block is pushed by the sliding block to make the arc plate slide inside the plastic shell, and then the rubber plate contacts and squeezes the ball on the outside, and the rubber plate frictionally blocks the sliding rotation of the ball, so that the friction force of the ball on the inner side of the rotating plate is increased and fixed, achieving the effect of friction fixation, and then achieving the effect of quickly and stably stopping the rotating plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is a schematic diagram of the structure of a probability model teaching aid for mathematics teaching.

[0013] Figure 2 The figure is a schematic diagram of the side structure of a turntable of the present invention.

[0014] Figure 3 It is a schematic diagram of the planar structure of a plate of the present invention.

[0015] Figure 4 The figure is a schematic diagram of the side structure of a pull rod of the present invention.

[0016] Figure 5 The figure is a schematic diagram of the side structure of a friction rod of the present invention.

[0017] Figure 6 It is a side structural schematic diagram of a central mechanism of the present invention.

[0018] Figure 7 The figure is a schematic diagram of the side structure of a friction block of the present invention.

[0019] In the figure: snap ring-1, turntable-2, chassis-3, pointer-4, plate-21, central mechanism-22, ball-23, turn plate-24, block-25, pull rod-w1, first spring-w2, closed plate-w3, movable plate-w4, second spring-w5, connecting rod-w11, friction rod-w12, force plate-w13, ball block-w14, hollow tube-w15, spring block-t1, round rod-t2, blocking plate-t3, plastic shell-s1, friction block-s2, sliding block-s3, third spring-s4, force block-s5, rubber plate-s21, support block-s22, arc plate-s23. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings: Example

[0021] As attached Figure 1 To Attachment Figure 5 As shown: The present invention discloses a probability model teaching aid for mathematics teaching, which comprises a snap ring 1, a turntable 2, a chassis 3, and a pointer 4. The turntable 2 is embedded in the upper end of the chassis 3, the snap ring 1 is installed on the inner side of the surface of the turntable 2, the pointer 4 is embedded in the outer side of the middle upper end of the turntable 2, the turntable 2 is provided with a plate 21, a central mechanism 22, a ball 23, a rotating plate 24, and a block 25. The central mechanism 22 is embedded in the upper end of the block 25, the ball 23 is movably engaged with the outer side of the central mechanism 22, the ball 23 is limitedly slidably matched with the inner side of the rotating plate 24, the plate 21 is engaged in the inner part of the upper end of the rotating plate 24, the block 25 is embedded in the inner part of the upper end of the chassis 3, the snap ring 1 It is installed on the inner side of the surface of the rotating plate 24, and the pointer 4 is embedded in the outer side of the central mechanism 22. The snap ring 1 is located on the outer side of the plate 21. The snap ring 1 is made of rubber and has the characteristic of high elasticity. A ball is provided on the upper end of the block 25, which slides with the lower end of the rotating plate 24, so that the pointer 4 is fixed on the upper end of the pointer 4 by the block 25 connected to the central mechanism 22, and then the plate 21 is adjusted in size and placed in a ring distribution on the upper end of the rotating plate 24. The snap ring 1 forms an elastic barrier on the upper side of the outer end of the plate 21, so that the plate 21 is horizontally engaged, and then the rotating plate 24 is manually rotated, and the rotating plate 24 is rotated and slid on the outer side of the central mechanism 22 through the ball 23 to realize the probability teaching demonstration.

[0022] The plate 21 is provided with a pull rod w1, a first spring w2, a sealed plate w3, a movable plate w4, and a second spring w5. The sealed plate w3 is attached to the inner side of the movable plate w4, the second spring w5 is embedded in the inner side of the movable plate w4, the pull rod w1 is installed on the inner side of the movable plate w4, the first spring w2 is embedded in the inner side of the movable plate w4, the movable plate w4 is engaged with the upper end of the rotating plate 24, the sealed plate w3 is made of sponge material, and two sealed plates w3 are provided, distributed on the movable plate The upper and lower layers of w4, the movable plates w4 are provided with two, symmetrically distributed on the left and right, the first spring w2 and the second spring w5 have the same elasticity, the pull rod w1 is located at the center axis position of the first spring w2 and the second spring w5, so that the pull rod w1 is pulled horizontally to drive the two movable plates w4 closer, and then compress the closed plate w3, and under the elastic force of the second spring w5 and the first spring w2, the movable plate w4 maintains the fan-shaped size adjustment, and the probability adjustment of the plate 21 placed on the surface of the rotating plate 24 is performed.

[0023] Among them, the pull rod w1 is provided with a connecting rod w11, a friction rod w12, a force plate w13, a ball block w14, and a hollow tube w15. The ball block w14 is engaged with the inner side of the hollow tube w15, and the hollow tube w15 is embedded in the inner side of the force plate w13. The connecting rod w11 is installed on the outer side of the force plate w13, and the friction rod w12 is embedded in the inner side of the force plate w13. The friction rod w12 is movably engaged with the inner side of the hollow tube w15. The connecting rod w11 is installed on the inner side of the movable plate w4. The force plate w13 is provided with two, which are arranged horizontally. The connecting rod w11 is made of rubber and has the characteristics of deformation and activity. The ball block w14 is provided with two rows, which are evenly distributed in the middle position inside the ball block w14, so that the two force plates w13 are manually pushed to squeeze each other, and then the movable plate w4 is pulled closer to each other through the connecting rod w11. At the same time, the friction rod w12 and the ball block w14 inside the hollow tube w15 are engaged with each other, and the elastic force of the first spring w2 and the second spring w5 is fixed, and then the movable plate w4 is adjusted in size after approaching, so as to realize flexible adjustment when the probability is equally divided, and prevent the range of probability teaching from being small.

[0024] Among them, the friction rod w12 is provided with a spring block t1, a round rod t2, and a blocking plate t3. The spring block t1 is attached to the inner side of the blocking plate t3, the blocking plate t3 is installed on the outer end of the round rod t2, and the round rod t2 is embedded in the inner side of the force-bearing plate w13. The blocking plate t3 is made of aluminum alloy and is in a circular ring shape with a notch on the left side, which has the characteristic of strong toughness. The outer side of the blocking plate t3 is relatively rough and has the characteristic of large friction. The spring block t1 is made of rubber and has the characteristic of large elasticity. Therefore, the round rod t2 in the friction rod w12 moves into the hollow tube w15, so that the blocking plate t3 slides and squeezes t14. When the friction rod w12 stops moving, the blocking plate t3 is engaged in the gap between the ball blocks w14 under the elastic force of the spring block t1, thereby achieving the fixation of the elastic force. The specific usage and function of this embodiment are as follows: In the present invention, the plate 21 is placed in a circular distribution on the upper end of the rotating plate 24 after the size is adjusted, and the upper side of the outer end of the plate 21 is elastically blocked by the clamp ring 1, so that the plate 21 is horizontally engaged, and then the rotating plate 24 is manually rotated, and the rotating plate 24 is rotated and slid on the outside of the central mechanism 22 by the ball 23, so as to realize the probability teaching demonstration. When the size of the plate 21 is adjusted, the two force plates w13 in the pull rod w1 are pulled horizontally to squeeze each other or move in opposite directions, and then the movable plate w4 is pulled closer to each other through the connecting rod w11, and at the same time, the friction rod w12 and the ball block w14 inside the hollow tube w15 are engaged with each other, and then the round rod t2 moves into the hollow tube w15, so that The blocking plate t3 slides and squeezes t14, and when the friction rod w12 stops moving, the blocking plate t3 is engaged in the gap between the ball blocks w14 under the elastic force of the spring block t1, thereby fixing the elastic force, thereby fixing the elastic force of the first spring w2 and the second spring w5 through the friction rod w12, and then the two movable plates w4 are adjusted in size after approaching, and at the same time, the movable plate w4 compresses the sealed plate w3, and under the elastic force of the second spring w5 and the first spring w2, the movable plate w4 maintains a fan-shaped size adjustment, and the probability of the plate 21 placed on the surface of the rotating plate 24 is adjusted, so as to realize flexible adjustment when the probability is equally divided, and prevent the range of probability teaching from being small. Example

[0025] As attached Figure 6 To Attachment Figure 7 As shown: The central mechanism 22 is provided with a plastic shell s1, a friction block s2, a sliding block s3, a third spring s4, and a force block s5. The friction block s2 is embedded in the outer side of the sliding block s3, the third spring s4 is installed on the side of the sliding block s3, the upper end of the third spring s4 is embedded in the lower end of the force block s5, the force block s5 is limited and movably matched inside the plastic shell s1, the plastic shell s1 is embedded in the upper end of the clamping block 25, the ball 23 is movably engaged with the outer side of the plastic shell s1, and the ball 23 is The friction block s2 is movably cooperated, and the third spring s4 is provided with six, which are evenly distributed in a ring with the force block s5 as the center. The third spring s4 is tilted outward at 40 degrees, so that the force block s5 is manually pressed to squeeze the third spring s4, and push the sliding block s3 to move outward on the inner side of the plastic shell s1, thereby driving the friction block s2 to squeeze the ball 23, so that the ball 23 performs friction blocking, and the rotating plate 24 is fixed by the ball 23, thereby achieving the effect of quickly and stably stopping the rotating plate 24.

[0026] Among them, the friction block s2 is provided with a rubber plate s21, a support block s22, and an arc plate s23. The arc plate s23 is embedded in the outer side of the support block s22, the w21 is fitted on the outer side of the w22, the support block s22 is installed on the outer side of the sliding block s3, and the outer side of the rubber plate s21 is in a triangular rack state, which has the characteristic of large friction, so that the support block s22 is pushed by the sliding block s3, so that the arc plate s23 slides in the plastic shell s1, and then the rubber plate s21 contacts and squeezes the ball 23 on the outside, and the rubber plate s21 frictionally blocks the sliding rotation of the ball 23, so that the friction force of the ball 23 on the inner side of the rotating plate 24 is increased and fixed, thereby achieving the effect of friction fixation. The specific usage and function of this embodiment are as follows: In the present invention, the force block s5 is manually pressed to squeeze the third spring s4, pushing the sliding block s3 to move outward on the inner side of the plastic shell s1, thereby driving the friction block s2 to squeeze the ball 23, so that the support block s22 is pushed by the sliding block s3, causing the arc plate s23 to slide in the plastic shell s1, and then the rubber plate s21 contacts and squeezes the ball 23 on the outside, and the rubber plate s21 frictionally blocks the sliding rotation of the ball 23, so that the friction force of the ball 23 on the inner side of the rotating plate 24 is increased and fixed, thereby achieving the effect of friction fixing, and then achieving the effect of quickly and stably stopping the rotating plate 24. Utilizing the technical solution of the present invention, or those skilled in the art designing similar technical solutions inspired by the technical solution of the present invention to achieve the above-mentioned technical effects, all fall within the protection scope of the present invention.

Claims

1. A probability model teaching aid for mathematics teaching, comprising a clamping ring (1), a rotating disk (2), a base plate (3), and a pointer (4). Features: The turntable (2) is embedded in the upper end of the chassis (3), the snap ring (1) is installed on the inner side of the surface of the turntable (2), and the pointer (4) is embedded in the outer side of the middle upper end of the turntable (2); The turntable (2) is provided with a plate (21), a central mechanism (22), a ball (23), a rotating plate (24), and a clamping block (25); the central mechanism (22) is embedded in the upper end of the clamping block (25); the ball (23) is movably engaged with the outer side of the central mechanism (22); the ball (23) is limitedly slidably matched with the inner side of the rotating plate (24); the plate (21) is engaged with the inner side of the upper end of the rotating plate (24); the clamping block (25) is embedded in the inner side of the upper end of the chassis (3); the clamping ring (1) is installed on the inner side of the surface of the rotating plate (24); the pointer (4) is embedded in the outer side of the central mechanism (22); and the clamping ring (1) is located on the outer side of the plate (21).

2. A probability model teaching aid for mathematics teaching according to claim 1, Features: The plate (21) is provided with a pull rod (w1), a first spring (w2), a sealed plate (w3), a movable plate (w4), and a second spring (w5); the sealed plate (w3) is fitted on the inner side of the movable plate (w4); the second spring (w5) is embedded on the inner side of the movable plate (w4); the pull rod (w1) is installed on the inner side of the movable plate (w4); the first spring (w2) is embedded on the inner side of the movable plate (w4); and the movable plate (w4) is engaged with the inner side of the upper end of the rotating plate (24).

3. A probability model teaching aid for mathematics teaching according to claim 2, Features: The pull rod (w1) is provided with a connecting rod (w11), a friction rod (w12), a force plate (w13), a ball block (w14), and a hollow tube (w15); the ball block (w14) is engaged with the inner side of the hollow tube (w15); the hollow tube (w15) is embedded in the inner side of the force plate (w13); the connecting rod (w11) is installed on the outer side of the force plate (w13); the friction rod (w12) is embedded in the inner side of the force plate (w13); the friction rod (w12) is movably engaged with the inner side of the hollow tube (w15); and the connecting rod (w11) is installed on the inner side of the movable plate (w4).

4. A probability model teaching aid for mathematics teaching according to claim 3, Features: The friction rod (w12) is provided with a spring block (t1), a round rod (t2), and a blocking plate (t3); the spring block (t1) is attached to the inner side of the blocking plate (t3); the blocking plate (t3) is mounted on the outer end of the round rod (t2); and the round rod (t2) is embedded in the inner side of the force-bearing plate (w13).

5. A probability model teaching aid for mathematics teaching according to claim 1, Features: The central mechanism (22) is provided with a plastic shell (s1), a friction block (s2), a sliding block (s3), a third spring (s4), and a force block (s5); the friction block (s2) is embedded on the outside of the sliding block (s3); the third spring (s4) is installed on the side of the sliding block (s3); the upper end of the third spring (s4) is embedded in the lower end of the force block (s5); the force block (s5) is movably engaged with the inner side of the plastic shell (s1); the plastic shell (s1) is embedded in the upper end of the clamping block (25); the ball (23) is movably engaged with the outer side of the plastic shell (s1); and the ball (23) is movably engaged with the friction block (s2).

6. A probability model teaching aid for mathematics teaching according to claim 5, Features: The friction block (s2) is provided with a rubber plate (s21), a support block (s22), and an arc plate (s23); the arc plate (s23) is embedded on the outside of the support block (s22); the (w21) is attached to the outside of (w22); and the support block (s22) is installed on the outside of the sliding block (s3).

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