Mathematical probability demonstration teaching aid
By designing mathematical probability demonstration teaching aids with components such as partitions, rotating rods, and wrapped light strips, the problem of the inability to adjust the area of the turntable in existing technologies has been solved, enabling flexible allocation and accurate display of multiple areas and improving teaching effectiveness.
Patent Information
- Application Number
- CN202422863921.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-11-22
AI Technical Summary
The existing turntable probability demonstration teaching aids cannot flexibly adjust the area of corresponding positions on the turntable when demonstrating multiple outcome probabilities, which affects the teaching effect.
A mathematical probability demonstration teaching aid was designed. By setting up components such as partitions, a central cylinder, a rotating rod, a pointer, a vertical rod, a torsion spring, a rotating tube, a winding light strip, and hooks on a circular ring, the circular disc can be partitioned by hooks and winding light strips. The accuracy and stability of partitioning are ensured by the reaction force of the torsion spring and the limiting components.
It enables flexible allocation and accurate display of various area sizes, improves the teaching effectiveness of probability demonstrations, and avoids problems such as inaccurate partitioning and component detachment.
Smart Images
Figure CN223566224U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of mathematical probability demonstration teaching, especially to a mathematical probability demonstration teaching aid. BACKGROUND
[0002] In the teaching of mathematics, probability is an important branch, which is a branch of mathematics that studies the quantitative laws of random phenomena. A phenomenon that is certain to occur under certain conditions is called a deterministic phenomenon. However, probability theory is a non-visual calculation method, which is difficult for students to understand during the learning process. In teaching, teachers generally use demonstration aids to assist teaching. Through demonstration aids, virtual probability problems can be materialized, making it easier for students to understand. With the help of demonstration aids, students can clearly and intuitively see the differences in results caused by different probability patterns.
[0003] In the prior art, the probability demonstration of the turntable is mainly through the cooperation of the rotating rod and the digital color block. When multiple result probability demonstration is needed, the area of the corresponding position on the turntable cannot be changed, which affects the display of multiple results and thus affects the demonstration teaching. UTILITY MODEL CONTENT
[0004] In view of the deficiencies in the prior art, the utility model aims to provide a mathematical probability demonstration teaching aid to solve the technical problems mentioned in the background.
[0005] The above technical purpose of the utility model is achieved through the following technical solutions:
[0006] A mathematical probability demonstration teaching aid, comprising a circular ring, a plurality of partition pieces are fixedly installed in an annular array on the inner circumferential side of the circular ring, the plurality of partition pieces form a circular disc, a central cylinder is fixedly connected to the top side of the center of the circular disc, a rotating rod is connected to the inner middle part of the central cylinder, the top end of the rotating rod extends above the central cylinder, a pointer is connected to the top end of the rotating rod, and a partition piece equal in number to the partition pieces is connected to the top side of the circular ring.
[0007] The partition piece comprises a stand, a torsion spring, a rotating tube, a winding light strip, and a hook. The stand is fixedly installed on the top side of the circular ring. The torsion spring is fixedly installed on the outer circumferential side of the stand. The rotating tube is connected to the outer circumferential side of the torsion spring. The bottom end of the rotating tube is rotationally connected to the top side of the circular ring. The winding light strip is wound around the outer circumferential side of the rotating tube, and the bottom end of the winding light strip is fixedly connected to the outer circumferential side of the rotating tube. The hook is fixedly installed on the top end of the winding light strip. The side of the stand is provided with a limiting piece.
[0008] The utility model discloses in a preferable example can be further configured as: the limiting piece includes a limiting rod, the limiting rod is fixedly connected on the top side of the circular ring, and a limiting groove is formed on the outer circumferential side of the limiting rod.
[0009] The utility model discloses in a preferable example can be further configured as: the inner circumferential side top of the center cylinder is provided with a round hole, and the diameter of the round hole is same with the diameter of the hook end.
[0010] The utility model discloses in a preferable example can be further configured as: the number of the round hole is several, and the several round holes are annular array distribution on the inner circumferential side of the center cylinder.
[0011] The utility model discloses in a preferable example can be further configured as: the outer circumferential side of the rotating pipe is tangent to one side of the corresponding two partition sheets, and the height of the pointer is higher than the height of the center cylinder.
[0012] Summarized above, the utility model discloses at least one of following beneficial technical effects:
[0013] 1. The mathematical probability demonstration teaching aid can directly remove the hook, hang the hook on the top side wall of the center cylinder, divide the disc, extract different numbers of hooks and winding lamp strips, divide the disc into several areas, demonstrate the probability of different area sizes, demonstrate the probability of the distribution of various area sizes, and avoid affecting the demonstration teaching effect.
[0014] 2. When the hook is retracted, the hook is removed from the top side wall of the center cylinder, and then the hook will be subjected to the reaction force of the torsion spring, so that the rotating pipe winds the winding lamp strip. Finally, in order to avoid the winding lamp strip from falling due to the recovery of the torsion spring to the non-elastic state, the hook is hung on the limiting rod, so as to avoid the falling of the hook and the winding lamp strip. The limiting groove is arranged to limit the hook, so as to avoid the sliding of the hook on the limiting rod, thereby causing the falling of the hook from the limiting rod.
[0015] 3. The mathematical probability demonstration teaching aid is provided with a round hole, and when the hook is pulled out and clamped on the inner side wall of the center cylinder, the end of the hook is inserted into the round hole, so as to avoid the sliding of the hook on the inner side wall of the center cylinder, thereby affecting the accuracy of the partition and the demonstration of the mathematical probability.
[0016] 4. The mathematical probability demonstration teaching aid is provided with a plurality of round holes, and the number of the round holes is equal to the number of the hooks, so as to position a plurality of hooks and accurately distinguish the winding lamp strip. The plurality of area sizes of the disc can be distinguished, and the phenomenon of inaccurate distinction is avoided.
[0017] 5. The mathematical probability demonstration teaching aid, the outer peripheral side of the rotating pipe is tangent to the side wall of the corresponding two partition pieces, so that the winding lamp strip can be attached to the side wall of the two partition pieces in the same vertical plane, so that the winding lamp strip and the side wall of the corresponding two partition pieces coincide in the case of looking down, avoiding the phenomenon of poor accuracy. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.
[0019] Figure 1 It is a whole structure schematic view of the mathematical probability demonstration teaching aid of the present application.
[0020] Figure 2 It is a whole structure schematic view of the mathematical probability demonstration teaching aid of the present application. Figure 1 It is an enlarged structure schematic view of A in the present application.
[0021] Figure 3 It is a partition piece and a limiting piece structure schematic view of the mathematical probability demonstration teaching aid of the present application.
[0022] In the figure, 1 is a ring, 2 is a partition piece, 3 is a disc, 4 is a center cylinder, 5 is a rotating rod, 6 is a pointer, 7 is a partition piece, 8 is a vertical rod, 9 is a torsion spring, 10 is a rotating pipe, 11 is a winding lamp strip, 12 is a hook, 13 is a limiting piece, 14 is a limiting rod, 15 is a fixed groove, and 16 is a circular hole. DETAILED DESCRIPTION
[0023] The present application will be further described in detail below with reference to the drawings.
[0024] Embodiment:
[0025] With reference to Figures 1-3 The present application discloses a mathematical probability demonstration teaching aid, which comprises a ring 1, a plurality of partition pieces 2 are fixedly installed on the inner peripheral side of the ring 1 in an annular array, a plurality of the partition pieces 2 form a disc 3, a center cylinder 4 is fixedly connected to the top side of the disc 3, a rotating rod 5 is connected to the inner middle part of the center cylinder 4, the top end of the rotating rod 5 extends above the center cylinder 4, a pointer 6 is connected to the top end of the rotating rod 5, and a partition piece 7 equal in number to the partition pieces 2 is connected to the top side of the ring 1.
[0026] The partition piece 7 comprises a vertical rod 8, a torsion spring 9, a rotating pipe 10, a winding light strip 11 and a hook 12, the vertical rod 8 is fixedly installed on the top side of the ring 1, the torsion spring 9 is fixedly installed on the outer circumferential side of the vertical rod 8, the rotating pipe 10 is connected to the outer circumferential side of the torsion spring 9, the bottom end of the rotating pipe 10 is rotationally connected with the top side of the ring 1, the winding light strip 11 is wound on the outer circumferential side of the rotating pipe 10, and the bottom end of the winding light strip 11 is fixedly connected with the outer circumferential side of the rotating pipe 10, the hook 12 is fixedly installed on the top end of the winding light strip 11, and the side of the vertical rod 8 is provided with a limiting piece 13.
[0027] In the embodiment, when the partition is not needed, the pointer 6 is directly rotated to drive the rotation of the rotating rod 5 to demonstrate the probability; when the partition is needed, the hook 12 is pulled to pull the winding light strip 11 on the rotating pipe 10, and then the end of the hook 12 is inserted into the central cylinder 4, and the torsion spring 9 is pulled when the rotating pipe 10 is driven to rotate, so that the torsion spring 9 exerts a counterforce when the hook 12 is pulled to the central cylinder 4, so that the end of the hook 12 is clamped on the inner side wall of the central cylinder 4;
[0028] Then, a corresponding number of hooks 12 are clamped at the central cylinder 4, and the hooks 12 are clamped by the side wall of the central cylinder 4, so that the partition effect is achieved, so that the winding light strip 11 is divided into different area regions for probability demonstration, and the light of the light strip is used for distinguishing, so as to avoid the influence of the gap between the two adjacent partition pieces 2 on the vision.
[0029] In the further preferable embodiment of the utility model, as shown in Figure 3 The limiting piece 13 comprises a limiting rod 14, the limiting rod 14 is fixedly connected to the top side of the ring 1, and a limiting groove 15 is formed in the outer circumferential side of the limiting rod 14.
[0030] In the embodiment, when the hook 12 is retracted, the hook 12 is taken out from the top side wall of the central cylinder 4, and then the hook 12 is subjected to the counterforce of the torsion spring 9, so that the rotating pipe 10 winds the winding light strip 11, and finally the hook 12 is hung on the limiting rod 14 to avoid the falling of the winding light strip 11 when the torsion spring 9 returns to the non-elastic state, thereby avoiding the falling of the hook 12 and the winding light strip 11, and the limiting groove 15 is arranged to limit the hook 12, thereby avoiding the upward and downward sliding of the hook 12 on the limiting rod 14, so that the hook 12 falls off from the limiting rod 14.
[0031] In the further preferable embodiment of the utility model, as shown in Figure 2As shown, a circular hole 16 is provided on the top of the inner circumference side of the central cylinder 4, and the diameter of the circular hole 16 is the same as the diameter of the end of the hook 12.
[0032] In this embodiment, when the hook 12 is pulled out and stuck on the inner wall of the central cylinder 4, the end of the hook 12 can be inserted into the circular hole 16, thereby preventing the hook 12 from sliding on the inner wall of the central cylinder 4, which would affect the accuracy of the partitioning and thus affect the demonstration of mathematical probability.
[0033] In a further preferred embodiment of this utility model, such as Figure 2 As shown, there is a number of circular holes 16, and the circular holes 16 are arranged in a ring array on the inner circumference of the central cylinder 4.
[0034] In this embodiment, the number of circular holes 16 is several, and the number is equal to the number of hooks 12, so as to facilitate the positioning of multiple hooks 12, thereby facilitating the accurate differentiation of the winding light strip 11, and avoiding the phenomenon of inaccurate differentiation when differentiating the various areas of the disc 3.
[0035] In a further preferred embodiment of this utility model, such as Figure 1 As shown, the outer periphery of the rotating tube 10 is tangent to the side of the corresponding two partition plates 2, and the height of the pointer 6 is higher than the height of the central cylinder 4.
[0036] In this embodiment, the outer periphery of the rotating tube 10 is tangent to the side wall of the two corresponding partitions 2, so that the winding light strip 11 can be on the same vertical plane as the side wall of the two partitions 2. When viewed from above, the winding light strip 11 coincides with the side wall of the two corresponding partitions 2, avoiding the phenomenon of poor accuracy.
[0037] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.
Claims
1. A mathematical probability demonstration teaching aid, comprising a ring (1), characterized in that, The inner circumference of the ring (1) is fixedly installed with a number of partition pieces (2) arranged in a ring array. The partition pieces (2) form a disk (3). A central cylinder (4) is fixedly connected to the top center of the disk (3). A rotating rod (5) is connected to the center center of the central cylinder (4). The top end of the rotating rod (5) extends to the top of the central cylinder (4). A pointer (6) is connected to the top end of the rotating rod (5). The top side of the ring (1) is connected with partition pieces (7) equal in number to the partition pieces (2). The partition component (7) includes a pole (8), a torsion spring (9), a rotating tube (10), a winding light strip (11), and a hook (12). The pole (8) is fixedly installed on the top side of the ring (1). The torsion spring (9) is fixedly installed on the outer periphery of the pole (8). The rotating tube (10) is connected to the outer periphery of the torsion spring (9). The bottom end of the rotating tube (10) is rotatably connected to the top side of the ring (1). The winding light strip (11) is wound around the outer periphery of the rotating tube (10), and the bottom end of the winding light strip (11) is fixedly connected to the outer periphery of the rotating tube (10). The hook (12) is fixedly installed on the top end of the winding light strip (11). A limiting member (13) is provided on the side of the pole (8).
2. The mathematical probability demonstration teaching aid according to claim 1, characterized in that, The limiting member (13) includes a limiting rod (14), which is fixedly connected to the top side of the ring (1), and a limiting groove (15) is provided on the outer periphery of the limiting rod (14).
3. The mathematical probability demonstration teaching aid according to claim 2, characterized in that, A circular hole (16) is provided on the top of the inner circumference side of the central cylinder (4), and the diameter of the circular hole (16) is the same as the diameter of the end of the hook (12).
4. The mathematical probability demonstration teaching aid according to claim 3, characterized in that, The number of the circular holes (16) is several, and the several circular holes (16) are arranged in a ring array on the inner circumference side of the central cylinder (4).
5. A mathematical probability demonstration teaching aid according to claim 4, characterized in that, The outer periphery of the rotating tube (10) is tangent to the side of the corresponding two partition plates (2) that are in contact with each other, and the height of the pointer (6) is higher than the height of the central cylinder (4).