Multifunctional demonstration teaching aid

Abstract

The application relates to a multifunctional demonstration teaching aid, which comprises a disc and a laser, the laser and the disc are provided with magnetic attraction parts, the other side of the disc is provided with angle scales, the center of the disc is provided with a positioning hole, and a lens is rotatably connected in the positioning hole. The disc and the laser are adsorbed on the blackboard, visible light beams can be projected to the lens, the optical principle is fully explained through the cooperation of reflection or refraction of the lens and the scales on the disc, and a good teaching effect is achieved.

Description

Technical Field

[0001] The present application relates to the field of teaching aids and equipment, and in particular to a multifunctional demonstration teaching aid. Background Art

[0002] In the physics teaching of the second grade of junior high school, students are taught the basic knowledge of optics such as reflected light, incident light, normal line and the positional relationship between them. Since the second grade students lack the knowledge of solid geometry, they usually find it difficult to understand the phenomenon of "reflected light, incident light and normal line are in the same plane" in the law of light reflection. When using mirror reflection and refraction to solve practical problems, students are prone to misunderstanding. Therefore, in teaching, teachers usually use tools to hand-draw the light path, normal line, reflection environment, etc., and rely on students' imagination to understand the principles of optics. The teaching effect and student acceptance need to be improved. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the present application provides a multifunctional demonstration teaching aid.

[0004] The multifunctional demonstration teaching aid provided by this application adopts the following technical solution:

[0005] A multifunctional demonstration teaching aid comprises a disc and a laser, wherein the laser and the disc are provided with magnetic suction parts, the other side of the disc is provided with an angle scale, the center of the disc is provided with a positioning hole, and a lens is rotatably connected in the positioning hole.

[0006] A further technical solution is that the angle scale comprises an upper semicircular scale and a lower semicircular scale, and the distance between the upper semicircular scale and the lower semicircular scale is the same as the thickness of the lens.

[0007] A further technical solution is that the lens is a plane mirror.

[0008] A further technical solution is that the lens is a lens.

[0009] This application has the following beneficial technical effects:

[0010] By attaching the disk and the laser to the blackboard, a visible light beam can be projected onto the lens. The reflection or refraction of the lens and the scale on the disk can be used to fully explain the principles of optics, which has a good teaching effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0012] Figure numerals: 1, disk; 2, laser; 3, angular scale; 31, upper semicircular scale; 32, lower semicircular scale; 4, positioning hole; 5, lens. DETAILED DESCRIPTION

[0013] The technical solution in this application is further described in detail below in conjunction with the accompanying drawings.

[0014] The present application embodiment discloses a multifunctional demonstration teaching aid. Figure 1 A multifunctional demonstration teaching aid includes a disc 1 and a laser 2. The laser 2 and the disc 1 are provided with magnetic suction parts (not shown in the figure), the other side of the disc 1 is provided with an angle scale 3, the center of the disc 1 is provided with a positioning hole 4, and a lens 5 is rotatably connected in the positioning hole 4.

[0015] The laser 2 is a laser pen or a semiconductor laser 2, which is used to emit a visible light beam. The magnetic attraction part is a magnet, which is used to adsorb the laser 2 and the disk 1 on the blackboard for easy display to students.

[0016] The angle scale 3 includes an upper semicircular scale 31 and a lower semicircular scale 32, and the distance between the upper semicircular scale 31 and the lower semicircular scale 32 is the same as the thickness of the lens 5. That is, when the lens 5 is parallel to the 180° line of the upper semicircular scale 31 and the lower semicircular scale 32, the two end surfaces of the lens 5 are flush with the 180° line of the upper semicircular scale 31 and the lower semicircular scale 32 respectively.

[0017] A positioning shaft is provided at one end of the lens 5 , and a magnetic attraction portion is provided at the end of the positioning shaft for passing through the positioning hole 4 to be adsorbed on the blackboard. The end face of the lens 5 adjacent to the positioning shaft is attached to the surface of the disk 1 .

[0018] In one embodiment, the lens 5 is a plane mirror. After the laser emits a visible light beam, it hits the plane mirror, and the plane mirror reflects the light beam, which is combined with the upper semicircular scale 31 on the disk 1 to demonstrate the principle of light reflection.

[0019] In another embodiment, the lens 5 is a lens. After the laser emits a visible light beam, it hits the lens, and the plane mirror refracts the light beam, which is combined with the lower semicircular scale 32 on the disk 1 to demonstrate the principle of light refraction.

[0020] The teaching staff can rotate the lens 5 or adjust the position of the laser 2 to explain the optical principles in more depth.

[0021] It should be noted that all directional indications (such as up, down, left, right, front and back) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In the present invention, unless otherwise specified and limited, the terms "connection", "setting" and the like should be understood in a broad sense. For example, "setting" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, unless otherwise specified. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multifunctional demonstration teaching aid, characterized in that: The invention comprises a disk (1) and a laser (2), wherein the laser (2) and the disk (1) are provided with magnetic attraction parts, an angle scale (3) is provided on the other side of the disk (1), a positioning hole (4) is provided at the center of the disk (1), and a lens (5) is rotatably connected in the positioning hole (4).

2. A multifunctional demonstration teaching aid according to claim 1, characterized in that: The angle scale (3) comprises an upper semicircular scale (31) and a lower semicircular scale (32), and the distance between the upper semicircular scale (31) and the lower semicircular scale (32) is the same as the thickness of the lens (5).

3. A multifunctional demonstration teaching aid according to claim 2, characterized in that: The lens (5) is a plane mirror.

4. A multifunctional demonstration teaching aid according to claim 2, characterized in that: The lens (5) is a lens.

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