Primary school lower grade mathematics demonstration teaching aid

Abstract

The utility model discloses a primary school lower grade mathematics demonstration teaching aid, and relates to the technical field of teaching aids. Comprising a fixed disc which comprises multiplicand arrays uniformly surrounding the edge of the fixed disc and concentric product arrays arranged on the fixed disc, and the numbers of the concentric product arrays and the numbers corresponding to the multiplicand arrays are located in the same radial direction; the beneficial effects are that through dynamic cooperation of the clamping grooves and the projections arranged on the fixed disc and the movable disc, relative positions of the fixed disc and the movable disc can be simply locked through a clamping structure formed by the clamping grooves and the projections when the movable disc rotates, so that a multiplicand array, a multiplier array and a concentric product array are in the same radial direction; and the concentric product array is completely displayed through the number display port, so that the pupil can clearly display the product result of the corresponding multiplier and multiplicand by screwing the movable disc when learning multiplication, thereby facilitating the understanding of the pupil and improving the teaching effect.

Description

A mathematical demonstration teaching aid for lower elementary grades Technical Field

[0001] This utility model relates to the field of teaching aids technology, and in particular to a mathematical demonstration teaching aid for lower elementary grades. Background Technology

[0002] In the early grades of elementary school mathematics teaching, multiplication is an important foundational concept. To help elementary school students understand multiplication more intuitively, multiplication tables are widely used as a common mathematical demonstration tool.

[0003] Currently, common multiplication tables typically consist of two rotating discs, each marked with numbers related to multiplication. Teachers or students rotate the discs to match different number combinations, demonstrating the multiplication process. However, in practice, due to elementary school students' insufficient hand strength control and operational precision, it's difficult to ensure accurate alignment of the numbers on the discs when rotating them. This results in unclear or incomplete numbers in the counting display area, making it easy for students to misread numbers and arrive at incorrect answers. This not only affects the teaching effectiveness of the multiplication table but may also lead to misunderstandings about multiplication, hindering the development of their mathematical thinking and accurate mastery of knowledge.

[0004] Therefore, it is necessary to design a teaching aid for elementary school lower grades that can effectively avoid the problem of misaligned numbers and ensure that the counting display is clear and complete. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] In view of the aforementioned problems with a mathematical demonstration teaching aid for lower elementary grades, this utility model is proposed.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a primary school lower grade mathematics demonstration teaching aid, including a fixed plate, which includes:

[0008] The multiplicative array is evenly arranged around the edge of the fixed plate;

[0009] A concentric product array is set on a fixed disk, and its numbers are in the same radial direction as the corresponding numbers of the multiplicand array;

[0010] Several slots are evenly arranged around the fixed plate, and are on the same radial direction as the corresponding numbers of the multiplicand array;

[0011] The moving plate, coaxial with the fixed plate, includes:

[0012] Multiply the array and evenly surround the edge of the moving disk;

[0013] Several protrusions are evenly fixed around the moving disk and are on the same radial direction as the corresponding numbers of the multiplication array. The rotation path of each protrusion covers the entire slot.

[0014] The protrusion rotates into the slot to form a locking structure, locking the relative positions of the fixed disk and the moving disk, and making the multiplicand array, the multiplicand array, and the concentric product array in the same radial direction.

[0015] As a preferred embodiment of the elementary school lower grade math demonstration teaching aid described in this utility model, each of the card slots is composed of two opposing inclined surfaces and a central straight surface.

[0016] As a preferred embodiment of the mathematical demonstration teaching aid for lower elementary grades described in this utility model, wherein: a sleeve shaft that rotates through the moving plate is coaxially fixed on the fixed plate, and the moving plate is driven by a spring connected between the moving plate and the sleeve shaft to slide towards the fixed plate.

[0017] As a preferred embodiment of the mathematical demonstration teaching aid for lower elementary grades described in this utility model, the multiplicand and multiplicand have the same structure and are arranged in ascending order from 1 to 9 with a step size of 1.

[0018] As a preferred embodiment of the primary school lower grade mathematical demonstration teaching aid described in this utility model, the concentric product array contains 9 concentric rings, and the numbers in the same radial direction are positive integer multiples of the corresponding numbers of the multiplicand array, and along its radial direction from the outside to the inside, starting with the corresponding numbers of the multiplicand array, the numbers increase in a sequence from 1 to 9 times.

[0019] As a preferred embodiment of the mathematical demonstration teaching aid for lower elementary grades described in this utility model, the moving disk further includes several display ports on its surface, the multiple display ports are distributed in a spiral pattern, and when the display port rotates to the position corresponding to the number of the concentric product array, the position corresponding to the number of the concentric product array is the product result of the corresponding numbers of the multiplicand array and the multiplicand array located on the same radial direction.

[0020] The beneficial effects of this utility model are as follows: Through the dynamic cooperation of the slots and protrusions set on the fixed plate and the moving plate, the relative positions of the fixed plate and the moving plate can be easily locked by the locking structure formed by the slots and protrusions when the moving plate rotates. This ensures that the multiplicand, multiplier, and concentric product array are in the same radial direction, and the concentric product array is fully displayed through the display port. This allows elementary school students to clearly see the product result of the corresponding multiplier and multiplicand by turning the moving plate when learning multiplication, thus facilitating their understanding and improving the teaching effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0022] Figure 1 is a schematic diagram of the structure of this utility model.

[0023] Figure 2 is a schematic diagram of the structure of the fixed plate in this utility model.

[0024] Figure 3 is a schematic diagram of the structure of the moving disc in this utility model.

[0025] Figure 4 is an exploded view of this utility model.

[0026] Figure descriptions: 1. Fixed plate; 11. Multiplicand array; 12. Concentric product array; 13. Slot; 2. Moving plate; 21. Multiplicand array; 22. Display port; 23. Protrusion; 3. Sleeve shaft; 31. Spring. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0030] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0031] Referring to Figures 1-4, an embodiment of this utility model is provided, which includes a mathematical demonstration teaching aid for lower elementary grades, comprising a fixed plate 1, which includes:

[0032] The multiplicand array 11 is evenly arranged around the edge of the fixed disk 1, with numbers 1 to 9 increasing in increments of 1; it provides the multiplicand in multiplication operations, serving as the basic set of numbers for the multiplication operation. When demonstrating multiplication using the teaching aid, these numbers remain fixed, providing stable starting parameters for the operation.

[0033] A concentric product array 12 is located on the fixed disk 1, and its numbers are in the same radial direction as the corresponding numbers of the multiplicand array 11. The concentric product array 12 contains 9 concentric rings, and the numbers in the same radial direction are positive integer multiples of the corresponding numbers of the multiplicand array 11. The numbers increase in a sequence from 1 to 9 times, starting with the corresponding numbers of the multiplicand array 11. Its function is to store products of different multiples related to the multiplicand. For example, the product number on the outermost concentric ring is the same as the number in the multiplicand array 11 in the same radial direction (1 time), and then increases in a sequence of 2, 3... 9 times, from the outermost concentric ring to the innermost ring.

[0034] Several slots 13 are evenly arranged around the fixed plate 1 and are on the same radial direction as the numbers corresponding to the multiplicand array 11. Each slot 13 consists of two opposing inclined surfaces and a central straight surface. The inclined surfaces on both sides can guide the protrusions 23 to smoothly enter the slot 13, and the central straight surface is used to limit the position of the protrusions 23 to ensure the accuracy of number alignment.

[0035] Moving plate 2, coaxial with fixed plate 1, includes:

[0036] Multiplication array 21 is evenly arranged around the edge of moving disk 2; the numbers 1 to 9 are arranged in ascending order of step size 1; they serve as multipliers in multiplication operations. Students rotate moving disk 2 to select different multipliers, which are then combined with the multiplicand of fixed disk 1 to form different multiplication equations.

[0037] The movable disk 2 also includes several display ports 22 on its surface. These display ports 22 are arranged in a spiral pattern. When a display port 22 rotates to the position corresponding to a number in the concentric product array 12, the corresponding number in the concentric product array 12 is the product of the numbers corresponding to the multiplicand array 11 and the multiplicand array 21, which are on the same radial direction. Its function is to accurately locate and display the answer to the multiplication operation. Through a specific spiral distribution design, it ensures that the correct product number in the concentric product array 12 can be accurately aligned during the rotation of the movable disk 2. The result of the multiplication operation is clearly presented in a visual way. Students only need to rotate the movable disk 2 to align the display port 22 with the corresponding position to see the answer intuitively without manual calculation. This reduces the difficulty of learning and improves the fun and efficiency of learning, helping students to quickly master multiplication operations.

[0038] Several protrusions 23 are evenly fixed around the moving disk 2 and are on the same radial direction as the corresponding numbers of the multiplication array 21. The rotation path of each protrusion 23 covers the entire slot 13. Its main function is to cooperate with the slot 13 of the fixed disk 1. When the protrusion 23 rotates into the slot 13, it forms a locking structure to lock the relative position of the fixed disk 1 and the moving disk 2.

[0039] A sleeve shaft 3, which rotates through the movable disk 2, is coaxially fixed on the fixed disk 1. The movable disk 2 is driven by a spring 31 connected to the sleeve shaft 3 to slide towards the fixed disk 1. The movable disk 2 can rotate coaxially around the fixed disk 1, preventing the movable disk 2 from deviating or shaking during rotation, and ensuring the stability and accuracy of the rotation of the movable disk 2. In addition, when the protrusion 23 rotates into the slot 13, the elastic force provided by the spring 31 makes the movable disk 2 fit tightly with the fixed disk 1, enhancing the stability of the snap-fit ​​structure and ensuring the reliability of digital alignment.

[0040] In this device, the protrusion 23 rotates into the slot 13 to form a locking structure, locking the relative positions of the fixed disk 1 and the moving disk 2, and ensuring that the multiplicand array 11, the multiplicand array 21, and the concentric product array 12 are in the same radial direction. This effectively solves the problem of unclear and incomplete counting display caused by misaligned numbers in traditional multiplication turntables. This device achieves precise positioning through the locking structure, ensuring that students see clear and complete numbers when performing multiplication operations, avoiding incorrect answers due to misreading numbers, and improving teaching effectiveness and learning accuracy.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A mathematical demonstration teaching aid for lower elementary grades, characterized in that, include: A fixed disk (1) includes: a multiplicand array (11) uniformly arranged around the edge of the fixed disk (1); a concentric product array (12) disposed on the fixed disk (1), with its numbers aligned radially to the corresponding numbers of the multiplicand array (11); a plurality of slots (13) uniformly arranged around the fixed disk (1), and aligned radially to the corresponding numbers of the multiplicand array (11); and a movable disk (2) coaxial with the fixed disk (1), including: a multiplier array (21) uniformly arranged around the movable disk. The edge of the disk (2) has several protrusions (23) that are evenly fixed around the moving disk (2) and are on the same radial direction as the corresponding numbers of the multiplication array (21). The rotation path of each protrusion (23) covers the entire slot (13). The protrusions (23) rotate into the slot (13) to form a snap-fit ​​structure, locking the relative positions of the fixed disk (1) and the moving disk (2), and making the multiplied array (11), the multiplication array (21), and the concentric product array (12) on the same radial direction.

2. The elementary school lower grade mathematics demonstration teaching aid according to claim 1, characterized in that: Each of the slots (13) consists of two opposing inclined surfaces and a central straight surface.

3. The elementary school lower grade mathematical demonstration teaching aid according to claim 1, characterized in that: The fixed plate (1) is coaxially fixed with a sleeve shaft (3) that rotates through the moving plate (2), and the moving plate (2) is driven by a spring (31) connected between it and the sleeve shaft (3) to slide towards the fixed plate (1).

4. The elementary school lower grade mathematical demonstration teaching aid according to claim 1, characterized in that: The multiplicand array (11) and the multiplicand array (21) have the same structure, and are arranged in ascending order of numbers 1 to 9 with a step size of 1.

5. A mathematical demonstration teaching aid for lower elementary grades according to claim 4, characterized in that: The concentric product array (12) contains 9 concentric rings, and the numbers in the same radial direction are positive integer multiples of the corresponding numbers of the multiplicand array (11). Along its radial direction from the outside to the inside, starting with the corresponding numbers of the multiplicand array (11), the numbers increase in a sequence from 1 to 9 times.

6. A mathematical demonstration teaching aid for lower elementary grades according to claim 5, characterized in that: The moving disk (2) also includes several display ports (22) on its surface. The multiple display ports (22) are distributed in a spiral pattern. When the display port (22) rotates to the position corresponding to the number of the concentric product array (12), the position corresponding to the number of the concentric product array (12) is the product of the numbers corresponding to the multiplied array (11) and the multiplied array (21) on the same radial direction.

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