Demonstration teaching aid for teaching

Abstract

The demonstration teaching aid comprises a teaching aid body and a fixing structure used for fixing the teaching aid body, and is characterized in that the teaching aid body comprises a frame body capable of demonstrating quadrangle changes, diagonal connecting rods rotationally connected with two diagonal corners on the frame body, and a back plate detachably connected with the frame body; wherein the frame body comprises a first rod body, a second rod body, a third rod body and a fourth rod body which are rotationally connected in sequence, the fourth rod body is rotationally connected with the first rod body, and a magnetic attraction structure is arranged on the frame body; and a magnetic attraction layer matched with the magnetic attraction structure is arranged on the back plate. The teaching aid can simulate the physical process of the boat crossing the river, including the flow direction of the river, the river crossing direction of the boat and the resultant velocity change under different conditions. According to the tool, students can observe and understand the physical phenomena through actual operation, so that the understanding and mastering of the students on physical concepts are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of teaching aids, and more particularly, to a demonstration teaching aid for teaching. BACKGROUND

[0002] Boats crossing rivers is a classic problem in physics teaching, and in the teaching process, it is mainly demonstrated through the teacher's oral explanation and the schematic diagram on the blackboard. Although this method can convey the basic principles, it lacks intuitiveness and interactivity, making it difficult for students to deeply understand the impact of river flow direction and boat travel direction on the boat crossing the river. Traditional teaching methods, such as lecture method, experimental method, discussion method, etc., although can help students understand physical concepts to some extent, but in the specific problem of boat crossing the river, due to the lack of intuitive dynamic demonstration, students are difficult to intuitively feel the change of the relative velocity and its impact on the crossing time and path.

[0003] In order to solve the above problems, a teaching tool is needed that can intuitively demonstrate the change of the relative velocity during the boat crossing the river. This tool should be able to simulate the flow direction of the river and the crossing direction of the boat, dynamically demonstrate the change of the relative velocity under different speed and direction conditions, and how these changes affect the crossing time and path of the boat. CONTENT OF THE INVENTION

[0004] One advantage of the present application is to provide a demonstration teaching aid for teaching, wherein the teaching aid can simulate the physical process of boat crossing the river, including the flow direction of the river, the crossing direction of the boat, and the change of the relative velocity under different conditions. This tool can allow students to observe and understand these physical phenomena through actual operation, thereby improving their understanding and mastery of physical concepts.

[0005] Another advantage of the present application is to provide a demonstration teaching aid for teaching, wherein through this intuitive teaching tool, students not only can better understand the problem of boat crossing the river, but also can learn important physical concepts such as the composition and decomposition of motion, vector analysis, etc. In addition, this tool can also stimulate students' interest in learning, cultivate their scientific inquiry ability and innovative thinking.

[0006] In order to achieve the above at least one advantage or other advantages and purposes, according to one aspect of the present application, a demonstration teaching aid for teaching is provided, comprising a teaching aid body and a fixing structure for fixing the teaching aid body, characterized in that the teaching aid body comprises a frame body capable of demonstrating quadrilateral change, two diagonal connecting rods rotatingly connected on the frame body, and a back plate detachably connected with the frame body; wherein

[0007] The frame body comprises a first rod body, a second rod body, a third rod body and a fourth rod body connected in sequence, the fourth rod body is rotatably connected with the first rod body, and the frame body is provided with a magnetic attraction structure.

[0008] The back plate is provided with a magnetic attraction layer matched with the magnetic attraction structure.

[0009] In the demonstration teaching aid, the magnetic attraction structure comprises a first magnetic member arranged on the first rod body, a second magnetic member arranged on the second rod body, a third magnetic member arranged on the third rod body and a fourth magnetic member arranged on the fourth rod body.

[0010] In the demonstration teaching aid, the first connecting end is provided with a strong magnetic member matched with the magnetic attraction layer, and the strong magnetic member has a stronger magnetism than the magnetic attraction structure.

[0011] In the demonstration teaching aid, the back plate comprises a demonstration layer, a protective layer and a shell layer connected with the frame body, and the magnetic layer is arranged on the back surface of the demonstration layer.

[0012] In the demonstration teaching aid, one surface of the demonstration layer is a smooth surface for writing with a marker pen.

[0013] In the demonstration teaching aid, the number of back plates is two, and the two back plates are connected through a connecting belt made of cloth material.

[0014] In the demonstration teaching aid, the fixing structure comprises a plurality of suction cups arranged on the back surface of the back plate.

[0015] In the demonstration teaching aid, the fixing structure is a fixing frame, the fixing frame comprises a base frame, a supporting rod rotatably connected with the base frame, an extension rod arranged on the supporting rod and a connecting hook formed at the end of the extension rod, and the back plate is arranged on the base frame.

[0016] In the demonstration teaching aid, the connecting hook is provided with an insertion part with an inclined end surface.

[0017] In the demonstration teaching aid, the base frame is provided with a limiting part for limiting the bottom of the back plate.

[0018] The further purposes and advantages of the present application will be fully understood through the following description and drawings.

[0019] The purposes, features and advantages of the present application will be fully understood through the following detailed description, drawings and claims. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 illustrates a perspective view of a demonstration teaching aid according to an embodiment of the present application.

[0021] Figure 2 FIG. 2 illustrates a perspective view of another view of a demonstration teaching aid according to an embodiment of the present application.

[0022] Figure 3 FIG. 3 illustrates a perspective view of a teaching aid body of a demonstration teaching aid according to an embodiment of the present application.

[0023] Figure 4 FIG. 4 illustrates Figure 3 An exploded view of the teaching aid body.

[0024] Figure 5 FIG. 5 illustrates an exploded view of a demonstration teaching aid according to an embodiment of the present application.

[0025] Figure 6 FIG. 6 illustrates Figure 5 An enlarged view of the middle A.

[0026] Figure 7 FIG. 7 illustrates an exploded view of another view of a demonstration teaching aid according to an embodiment of the present application.

[0027] Figure 8 FIG. 8 illustrates an exploded view of a backboard according to an embodiment of the present application.

[0028] Figure 9 FIG. 9 illustrates an exploded view of another view of a backboard according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] The following description is provided so as to enable any person skilled in the art to make or use the application. The embodiments described in the following description are only examples of implementing the application and are not intended to limit the scope, applicability, or configuration of the application in any way. Various changes to the embodiments described herein can be made by those skilled in the art without departing from the spirit and scope of the application.

[0030] It can be understood that the term "one" should be understood as "at least one" or "one or more" in the context of a number, that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be more than one, and the term "one" cannot be understood as a limitation on the number.

[0031] Although numerals such as "first", "second", and the like will be used to describe various components, the components are not limited by these numerals. The terms are used only to distinguish one component from another. For example, a first component could be termed a second component, and, likewise, a second component could be termed a first component, without departing from the teachings of the present application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "has", when used in this specification, specify the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

[0033] Exemplary demonstration aid for teaching

[0034] Referring to the drawings Figures 1-2 According to the embodiments of the present application, a demonstration aid for teaching is disclosed, which is particularly suitable for mathematics and physics teaching, such as quadrilateral model and the boat crossing problem in physics. The demonstration aid comprises at least a demonstration body 10 and a fixing structure, wherein the demonstration body 10 is used to demonstrate the boat crossing problem, and the fixing structure is used to stabilize the demonstration body 10. The demonstration body 10 comprises a quadrilateral frame 11, a diagonal connecting rod 12 and a back plate 20. The frame 11 is composed of four rods, i.e. a first rod 1101, a second rod 1102, a third rod 1103 and a fourth rod 1104, which are connected in sequence to form a quadrilateral. Specifically, one end of the first rod 1101 is connected with one end of the second rod 1102 through a rotatable shaft, the other end of the second rod 1102 is connected with one end of the third rod 1103, the other end of the third rod 1103 is connected with one end of the fourth rod 1104, and the other end of the fourth rod 1104 is connected with the free end of the first rod 1101 through a movable shaft, so that the whole structure can flexibly demonstrate the change of the quadrilateral. This design not only enhances the practicability of the demonstration aid, but also improves the interactivity and dynamic demonstration effect in teaching. In the example of the present application, in order to control the weight of the whole demonstration body 11, the first, second, third and fourth rods are made of polyethylene material.

[0035] In the embodiments of the present application, referring to the drawings Figures 3-4As shown in the design of the present teaching demonstration tool, the connecting point of the first rod body 1101 and the fourth rod body 1104 is called the first connecting end 101, and the connecting point of the second rod body 1102 and the third rod body 1103 is called the second connecting end 102. One end of the diagonal connecting rod 12 is connected to the first connecting end 101 through a rotatable shaft, and the diagonal connecting rod 12 is provided with a guide rail 121, which is a strip-shaped hole formed by hollowing out the diagonal connecting rod 12. A limiting shaft is provided on the second connecting end 102, which is a metal shaft with external threads. The limiting shaft passes through the guide rail 121 on the diagonal connecting rod 12, and a positioning nut 13 is screwed onto the limiting shaft. When the positioning nut 13 is tightened, the diagonal connecting rod 12 can be firmly fixed on the second connecting end 102, thereby ensuring the stability and accuracy of the tool during demonstration. This precise connection and fixing mechanism not only enables the tool to demonstrate the dynamic changes of quadrilaterals flexibly, but also accurately simulates complex problems such as small boats crossing rivers in physical teaching, greatly improving the intuitiveness and interactivity of teaching.

[0036] The back of the frame body 11 of the present teaching demonstration tool is designed with a magnetic structure 111, which enables the frame body 11 to be fixed on the back plate 20 by magnetic force, which is convenient and stable. Specifically, the magnetic structure 111 is composed of four groups of magnetic pieces, namely the first magnetic piece 1111, the second magnetic piece 1112, the third magnetic piece 1113 and the fourth magnetic piece 1114. The four magnetic pieces are respectively bonded on the back of the first, second, third and fourth rod bodies, ensuring the close adsorption between the frame body 11 and the back plate 20. In addition, a strong magnetic piece 112 is specially designed on the first connecting end 101, which has a magnetic strength greater than that of other magnetic pieces and is made of rubidium magnet. This strong magnet can provide additional fixing force to ensure the stability of the tool during demonstration. The design of the magnetic structure not only simplifies the installation and disassembly process of the tool, but also enhances its flexibility and durability in teaching demonstration, enabling the tool to be quickly and stably fixed on the back plate, providing great convenience for teaching.

[0037] Reference Figures 8-9As shown, the backboard 20 of the teaching demonstration tool provides a stable adsorption platform; the backboard 20 is composed of a demonstration layer 21, a magnetic adsorption layer 22, a protective layer 23 and a shell layer 24. The demonstration layer 21 is a smooth whiteboard, which can be used by teachers with a marker pen to write and draw basic graphics such as small rivers, providing an intuitive visual aid for teaching. The magnetic adsorption layer 22 is composed of a plurality of regularly arranged magnets, which are bonded to the back of the demonstration layer 21 and matched with the magnetic adsorption structure 111 on the back of the frame 11, so that the frame 11 can be stably adsorbed on the backboard 20. The protective layer 23 is a layer of sponge filled in the gap of the magnetic adsorption layer 22, which not only plays a limiting role to prevent the magnetic adsorption layer 22 from falling off, but also provides additional cushioning protection. The shell layer 24 is bonded to the frame of the demonstration layer 21, wrapping the magnetic adsorption layer 22 and the protective layer 23 inside, enhancing the overall stability. During the teaching demonstration process, the frame 11 is fixed on the demonstration layer 21 through the magnetic adsorption structure 111, while the magnetic strength of the strong magnetic piece 112 (such as a rubidium magnet) on the first connecting end 101 is higher than that of the magnetic adsorption structure 111, ensuring that the first connecting end 101 will not move without a large external force. Therefore, when the second connecting end 102 is pushed, the first, second, third and fourth rod bodies can move flexibly to simulate dynamic processes such as small boat crossing the river. In addition, the backboard 20 is designed as two, connected by a cloth material connecting belt 241, which is convenient to fold and store when not in use, saving space, and convenient to carry and store.

[0038] Reference Figure 9 As shown, in the design of the teaching demonstration tool, the fixed structure is to ensure that the backboard can be stably fixed on the blackboard or other smooth surface in the classroom. Specifically, the fixed structure adopts the form of a suction cup 25, which is fixed on the back of the shell layer 24 of the backboard 20. In order to improve the fixing effect, the suction cups on the two backboards 24 are designed in a staggered structure, which can form multiple contact points on the blackboard or smooth screen in the classroom, thereby achieving firm adsorption of the backboard 24. The arrangement of the suction cup 25 not only makes the backboard 20 easily fixed on various smooth surfaces, but also allows the position of the backboard to be adjusted flexibly according to needs, to adapt to different teaching scenarios. In addition, the staggered structure of the suction cup 25 also helps to distribute the weight of the backboard 20, reducing damage to the surface of the blackboard or screen, prolonging the service life. The design of the fixed structure fully considers the diversity and practicality of the teaching environment, making the tool quickly and stably deployed in the classroom, providing great convenience for teaching.

[0039] Reference Figures 5-7As shown, in another embodiment, the fixing structure is designed as a fixing frame, which is composed of a base frame 311, a supporting rod 321, an extension rod 322 and a connecting hook 323. The base frame 311 is made of plastic material, and part of it is designed as a limiting strip 312, which can effectively prevent the backboard 20 from sliding when the backboard is placed on the base frame 311. The supporting rod 321 is also made of plastic material, and its bottom is fixed to the middle of the base frame by a movable connection manner. The middle of the supporting rod 321 is designed as a hollow structure, so that the extension rod 322 can be inserted into it. At the upper part of the supporting rod 321, a fixing bolt 323 is connected by screwing. When the fixing bolt 324 is rotated and presses the extension rod 322, the extension rod 322 and the supporting rod 321 can be kept in a fixed state. The top of the extension rod 322 is designed with a hook 323, which is formed by bending the top of the extension rod 322, and an end face inclined insertion part 323a is designed on the hook 323. When the traditional blackboard is used in the classroom, the insertion part 323a can be inserted into the gap between the blackboard and the wall, so that the hook can be hung on the blackboard, and the backboard is stably placed on the base frame. The design of the fixing structure fully considers the adaptability of different classroom environments, whether it is facing a smooth whiteboard or a traditional blackboard, it can ensure the stable placement of the teaching aid, and provides great convenience and flexibility for teaching.

[0040] The basic principles of the present application are described above in combination with specific embodiments, but it should be pointed out that the advantages, advantages, effects and the like mentioned in the present application are only examples and not limitations, and these advantages, advantages, effects and the like cannot be considered as the must-have of each embodiment of the present application. In addition, the above-mentioned specific details are only for the purpose of example and for the purpose of understanding, and are not limited to the above-mentioned specific details.

Claims

1. A demonstration teaching aid for use in teaching, comprising an aid body and a fixing structure for fixing the aid body, characterized in that, The teaching tool body comprises a frame body capable of demonstrating quadrilateral change, two diagonal connecting rods rotatably connected on the frame body, and a back plate detachably connected with the frame body The frame body comprises a first rod body, a second rod body, a third rod body and a fourth rod body connected in sequence, and the fourth rod body is rotatably connected with the first rod body, and the frame body is provided with a magnetic attraction structure The back plate is provided with a magnetic attraction layer matched with the magnetic attraction structure.

2. A demonstration teaching aid for teaching according to claim 1, wherein The magnetic attraction structure comprises a first magnetic member arranged on the first rod body, a second magnetic member arranged on the second rod body, a third magnetic member arranged on the third rod body, and a fourth magnetic member arranged on the fourth rod body.

3. The demonstration teaching aid of claim 1, wherein The connecting point of the first rod body and the fourth rod body is called a first connecting end, and the first connecting end is provided with a strong magnetic member matched with the magnetic attraction layer, and the magnetic property of the strong magnetic member is greater than that of the magnetic attraction structure.

4. A demonstration teaching aid for use in teaching according to claim 3, wherein The back plate comprises a demonstration layer, a protection layer and a shell layer connected with the frame body, and the magnetic attraction layer is arranged on the back of the demonstration layer.

5. A demonstration teaching aid for use in teaching according to claim 4, wherein One side of the demonstration layer is a smooth surface for writing with a marker pen.

6. The demonstration teaching aid of claim 1, wherein The number of back plates is two, and the two back plates are connected through a connecting belt made of cloth material.

7. The demonstration teaching aid of claim 1, wherein The fixing structure is a plurality of suction cups arranged on the back of the back plate.

8. The demonstration teaching aid of claim 1, wherein The fixing structure is a fixing frame, which comprises a base frame, a supporting rod rotatably connected with the base frame, an extension rod arranged on the supporting rod, and a connecting hook formed at the end of the extension rod, and the back plate is arranged on the base frame.

9. A demonstration teaching aid for use in teaching according to claim 8, wherein The connecting hook is provided with an insertion part with an inclined end face.

10. The demonstration teaching aid of claim 8, wherein The base frame is provided with a limiting part for limiting the bottom of the back plate.

Images