Teaching aid for laboratory
By designing laboratory teaching aids to demonstrate the trajectory of a sphere on straight and curved tracks, the problem of the lack of intuitive demonstrations in traditional teaching methods is solved, and students' understanding of kinematic concepts is improved.
Patent Information
- Application Number
- CN202423208019.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-24
AI Technical Summary
Traditional teaching methods struggle to provide intuitive experimental demonstrations, resulting in students' insufficient and incomplete understanding of linear and curvilinear motion.
Design a laboratory teaching aid that includes a sphere, a base, and a curved track. The sphere's motion trajectory can be demonstrated by disassembling the sub-track. Combined with a demonstration board and magnetic materials, the relationship between linear and curvilinear motion can be shown.
The intuitive experimental demonstrations deepened students' understanding of linear and curvilinear motion, thus improving teaching effectiveness.
Smart Images
Figure CN223743189U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to teaching aid technical field, especially laboratory teaching aid. BACKGROUND
[0002] In the process of teaching physics in junior and senior high school, kinematics as a basic and vital knowledge block in classical mechanics covers multiple core concepts such as linear motion and curvilinear motion. The traditional teaching method mainly relies on the form of text description, hand-drawing, animation display or video courseware, although these methods can help students understand the principle of dynamics to some extent, but often due to the lack of intuitive experimental demonstration, leading to students feel difficult to understand and master the specific form and change rule of motion trajectory. Especially for abstract concepts such as linear motion and curvilinear motion, the traditional teaching method is difficult to provide enough visual and tactile experience, leading to students' understanding of basic physical principles is not deep and firm enough.
[0003] Therefore, it is necessary to design a laboratory teaching aid which is convenient for students to operate, observe and study the specific trajectory of objects in linear and curvilinear motion. CONTENT OF THE UTILITY MODEL
[0004] In order to overcome the shortcomings in the above background art, the utility model provides a laboratory teaching aid, which can deepen students' understanding of the linear motion and curvilinear motion of objects through intuitive experimental demonstration.
[0005] A laboratory teaching aid, comprising a ball and a chassis, the chassis is provided with a demonstration board for displaying the motion trajectory of the ball, and a curvilinear track for limiting the motion trajectory of the ball, the curvilinear track is spliced by multiple sub-tracks, each sub-track can be individually detached, one of the sub-tracks comprises a ball inlet, and another of the sub-tracks comprises a ball outlet.
[0006] Further, the shape of the curvilinear track is parabolic.
[0007] Further, the upper side of each sub-track is provided with a cover plate, the cover plate is integrally formed with the sub-track, two adjacent cover plates can be seamlessly spliced, and the cover plates are spliced together to cover the demonstration board.
[0008] Further, the cover plate is made of transparent glass or transparent acrylic plate.
[0009] Further, the demonstration board is a liquid crystal screen panel or a magnetic panel, and the ball is made of magnetic metal.
[0010] Further, the chassis is provided with a ball launching ramp, and the low end of the ramp is smoothly connected with the ball inlet.
[0011] Further, the demonstration part of the parabolic trajectory includes a vertical support which is perpendicular to the demonstration board, a vertical demonstration board is arranged at the back side of the vertical support, a transparent board is arranged at the front side of the vertical support, a demonstration table is arranged between the vertical demonstration board and the transparent board, the demonstration table includes a horizontal part and an inclined part, the low end of the inclined part is connected with the high end of the inclined table, a horizontal hole is formed in the upper end of the vertical support, a push rod is slidably arranged in the horizontal hole, and a telescopic rope is arranged outside the horizontal hole.
[0012] Further, the bottom frame is provided with a storage area which is used for placing balls and magnets of different sizes.
[0013] The teaching aid can show the motion trajectory of the ball on the demonstration board, the relationship between the curved motion of the ball, the linear motion and the speed direction under the condition of no external force can be shown on the demonstration board by disassembling the sub-track, and the students can observe different forms of linear and curved motion trajectories in actual operation through direct demonstration and observation, so that the understanding of the kinematics concept of the students is deepened. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a three-dimensional structure schematic view of the utility model.
[0015] Figure 2 It is a structure schematic view of the sub-track and the cover plate of the utility model.
[0016] Figure 3 It is an explosion view of the sub-track and the cover plate of the utility model.
[0017] Figure 4 It is a schematic view of the parabolic trajectory demonstration part of the utility model which is provided with an inclined table.
[0018] Figure 5 It is a structure schematic view of the parabolic trajectory demonstration part and the storage area of the utility model.
[0019] The marks in the drawings: 1: ball, 2: bottom frame, 3: demonstration board, 41, 42, 43, 44: sub-track, 5: ball inlet, 6: ball outlet, 7: cover plate, 8: inclined table, 9: vertical support, 91: vertical demonstration board, 92: transparent board, 93: demonstration table, 94: push rod, 95: telescopic rope, 10: storage area. DETAILED DESCRIPTION
[0020] The utility model will be further described in combination with specific embodiments, the illustrative embodiments of the utility model and the description are used to explain the utility model, but not as the limitation of the utility model.
[0021] For example, Figures 1-5The shown laboratory teaching aid specifically comprises a ball 1, a base frame 2 and a curved track, wherein the base frame 2 is provided with a demonstration board 3 for displaying the movement track of the ball 1, the ball 1 moves in a curve or a straight line on the demonstration board 3 and leaves a clear movement track for students to observe, in addition, the curved track for limiting the movement track of the ball 1 is spliced by multiple sub-tracks 41, 42, 43 and 44, specifically, in the embodiment, the curved track is spliced by four sub-tracks, namely, the sub-track 41, the sub-track 42, the sub-track 43 and the sub-track 44, each of the sub-tracks 41, 42, 43 and 44 of the curved track can be separately detached, the purpose is to facilitate the observation of the movement direction of the ball 1 in the case of no constraint after one of the sub-tracks is separately taken off, in one preferred scheme, the curved track spliced by the four sub-tracks 41, 42, 43 and 44 is in a parabolic shape, one of the sub-tracks 41 comprises a ball inlet 5 and the other sub-track 44 comprises a ball outlet 6.
[0022] In use, the ball 1 is put into the ball inlet 5 and given an initial speed, the ball 1 moves along the track path under the constraint of the curved track and leaves a track on the demonstration board 3, the movement track of the ball 1 in this time is consistent with the shape of the curved track. Then the sub-tracks 41, 42, 43 and 44 are taken off in turn and the ball 1 is released repeatedly, the ball will move in a straight line along the tangent of the curve of the original track and leave a movement track again. Furthermore, all the sub-tracks 41, 42, 43 and 44 are taken off, the ball 1 is released directly from a position close to the ball inlet 5, the straight line movement of the ball under no external force can be observed, the movement also leaves a straight line track, then an external force is applied to the ball, for example, an attractive force (a magnet or a magnetite is placed, the ball 1 is made of iron ball or magnetic metal ball), the ball 1 is released from the same position, under the action of the external force, the ball can be directly observed to deviate from the original straight line track and move in a curve. Through the above demonstration, the relationship between the straight line and the curve movement and the speed direction can be directly observed and understood, and the understanding of the students for the curve and straight line movement is deepened.
[0023] Reference Figure 2 and Figure 3 In order to facilitate the disassembly and installation of each sub-track 41, 42, 43 and 44, a cover plate 7 is arranged on the upper side of each sub-track 41, 42, 43 and 44, wherein each cover plate 7 is integrally formed with the corresponding sub-track 41, 42, 43 and 44, and the two adjacent cover plates 7 can be seamlessly spliced, each cover plate 7 is spliced together and covers the demonstration board 3, wherein the cover plate 7 is made of glass or transparent acrylic plate, in the embodiment, the transparent acrylic plate is preferred, the demonstration board 3 for displaying the movement track is made of liquid crystal screen panel or magnetic panel, and the ball 1 is made of magnetic metal.
[0024] AsFigure 4 On this basis, the upper side of the chassis 2 is provided with a ball 1 release inclined table 8, the low end of the inclined table 8 is smoothly connected with the ball 1 entrance, the ball 1 is released from the top of the inclined table 8, a stable initial speed can be applied to the ball 1, and the release initial speed will be basically consistent after a plurality of experimental demonstrations, and the influence on the experiment is small.
[0025] Reference Figure 4 And Figure 5 The teaching aid further comprises a horizontal trajectory demonstration part, which comprises a vertical support 9 perpendicular to the demonstration board 3, the vertical support 9 is made of plastic material, a vertical demonstration board 91 is installed on the rear side of the vertical support 9, a transparent plate 92 is arranged on the front side of the vertical support 9, preferably an acrylic plate, a demonstration table 93 is arranged between the vertical demonstration board 91 and the transparent plate 92, the demonstration table 93 comprises a horizontal part and an inclined part, the low end of the inclined part is connected with the high end of the inclined table 8, a horizontal hole is formed in the upper end of the vertical support 9, a push rod 94 is slidably arranged in the horizontal hole, and an elastic cord 95 is arranged outside the horizontal hole. The push rod 94 is released by the elastic cord 95, which hits the ball 1 placed on the horizontal part of the demonstration table 93, so that the ball 1 makes a horizontal motion and displays the path on the vertical demonstration board 91, and then the ball 1 rolls down along the inclined part of the demonstration table 93 into the inclined table 8 and completes the subsequent curved and straight line motion. Through the horizontal trajectory demonstration part, the horizontal motion can be demonstrated at the same time as the subsequent curved and straight line motion is connected, so that the content displayed by the teaching aid is more abundant. In addition, a storage area 10 is further arranged on the chassis 2, and the storage area 10 is used for placing balls 1 of different sizes and a magnet.
[0026] The above-mentioned embodiments only express the preferred embodiments of the present application, which are described in detail and specifically, but cannot be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications, improvements and substitutions can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. A laboratory teaching aid, characterized in that It comprises a ball (1) and a base frame (2), the base frame (2) is provided with a demonstration board (3) for displaying the movement track of the ball (1), and The curve track limiting the movement track of the ball (1) is spliced by multiple sub-tracks (41, 42, 43, 44), each sub-track (41, 42, 43, 44) can be individually detached, one of the sub-tracks (41) comprises a ball inlet (5), and another of the sub-tracks (44) comprises a ball outlet (6).
2. The laboratory teaching aid of claim 1, wherein The shape of the curve track is parabolic.
3. A laboratory teaching aid according to claim 1 or 2, characterised in that, The upper side of each of the sub-tracks (41, 42, 43, 44) is provided with a cover plate (7), the cover plate (7) is integrally formed with the sub-track (41, 42, 43, 44), two adjacent cover plates (7) can be seamlessly spliced, and the cover plates (7) are spliced together and just cover the demonstration board (3).
4. The laboratory teaching aid of claim 3, wherein The cover plate (7) is made of transparent glass or transparent acrylic plate.
5. The laboratory teaching aid of claim 4, wherein, The demonstration board (3) is a liquid crystal screen panel or a magnetic panel, and the ball (1) is made of magnetic metal.
6. The laboratory teaching aid of claim 5, wherein, The base frame (2) is provided with a ball (1) launching ramp (8), and the low end of the ramp (8) is smoothly connected with the ball inlet (5).
7. The laboratory teaching aid of claim 6, wherein It also comprises a horizontal projection track demonstration part, which comprises a vertical support (9) perpendicular to the demonstration board (3), a vertical demonstration board (91) is arranged on the rear side of the vertical support (9), a transparent plate (92) is arranged on the front side of the vertical support (9), a demonstration platform (93) is arranged between the vertical demonstration board (91) and the transparent plate (92), the demonstration platform (93) comprises a horizontal part and an inclined part, the low end of the inclined part is connected with the high end of the ramp (8), a horizontal hole is formed in the upper end of the vertical support (9), a push rod (94) is slidably arranged in the horizontal hole, and a telescopic rope (95) is arranged outside the horizontal hole.
8. The laboratory teaching aid of claim 7, wherein, The base frame (2) is provided with a storage area (10) for placing balls (1) of different sizes and magnetite.