CN202795832U - Projection-type primary school mathematics teaching aid - Google Patents
Projection-type primary school mathematics teaching aid Download PDFInfo
- Publication number
- CN202795832U CN202795832U CN 201220507849 CN201220507849U CN202795832U CN 202795832 U CN202795832 U CN 202795832U CN 201220507849 CN201220507849 CN 201220507849 CN 201220507849 U CN201220507849 U CN 201220507849U CN 202795832 U CN202795832 U CN 202795832U
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- shell
- model
- projection
- primary school
- grip block
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Abstract
The utility model relates to a teaching aid used in the primary school mathematics teaching, especially to a projection-type primary school mathematics teaching aid, comprising a shell and a clamping plate arranged in the shell. The shell is a square barrel-shaped structure, the periphery of the shell is equipped with side wall plates made of lightproof materials, and the front end of the shell is equipped with a projection curtain plate; the rear end of the shell is open, the clamping plate having a flat plate structure and made of a transparent material is parallel with the projection curtain plate, and the upper and lower ends of the clamping plate are equipped with model guide rails; the two sides of the clamping plate are equipped with model inlets corresponding to the model guide rails, and the model inlets penetrate the side wall plates of the shell. The projection-type primary school mathematics teaching aid of the utility model is simple in structure and easy in manufacture, can explain various geometric figures visually during teaching and the conversion relations between the figures of different shapes by combining or segmenting the figures, and enables the primary school mathematics teaching quality and teaching efficiency to be improved.
Description
Technical field
The utility model relates to the teaching aid that a kind of primary school math teaching is used, specifically a kind of projection-type math teaching tool for primary school.
Background technology
In primary school math teaching, need the common geometric figure of explanation, such as triangle, circle, parallelogram etc., and the simple conversion between these figures, can be combined into a parallelogram such as two triangles, a square can be divided into two triangles etc.The aided education that does not have teaching aid, lower student is relatively more difficult for the understanding of figure.
Summary of the invention
The purpose of this utility model is to provide a kind of projection-type math teaching tool for primary school of simple in structure, easy making, reaches intuitively to the pupil to explain simple geometry figure and the mutual purpose of conversion thereof.
In order to reach above purpose, technical scheme that the utility model adopts is: this projection-type math teaching tool for primary school, comprise shell and setting grip block in the enclosure, it is characterized in that: shell is square barrel-like structure, sidewall paneling for adopting light-proof material to make around the shell, the front end of shell is provided with the projection screen plate, the open rearward end of shell, described grip block is arranged between the open rearward end place of projection screen plate and shell, it is parallel with the projection screen plate that transparent material is made the grip block of slab construction, grip block upper, lower two ends are provided with the model guide rail, the both sides of grip block are provided with the model entrance corresponding to the model guide rail, and described model entrance runs through the sidewall paneling of shell.
In the inner chamber of shell, the rear end of grip block is provided with electric light source.
The beneficial effects of the utility model are: simple in structure, easy making, can explain very intuitively various geometric figures in the teaching, and combination that can be by figure or cut apart transformational relation between the figure of explaining obstructed shape improves quality and the efficiency of teaching of primary school math teaching.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model.
Embodiment
As shown in Figure 1, projection-type math teaching tool for primary school described in the utility model, comprise shell 1 and the grip block 2 that is arranged in the shell 1, shell 1 is square barrel-like structure, sidewall paneling for adopting light-proof material to make around the shell 1, the front end of shell 1 is provided with projection screen plate 3, and projection screen plate 3 adopts translucent ground glass or other similar materials to make, and can the light that the rear projection is come be developed to the curtain plate.The open rearward end of shell 1, this open rearward end place can be used as light source facing to outdoor light, described grip block 2 is arranged between the open rearward end place of projection screen plate 3 and shell 1, it is parallel with projection screen plate 3 that transparent material is made the grip block 2 of slab construction, the upper/lower terminal of grip block 2 is provided with the model guide rail, the both sides of grip block 2 are provided with the model entrance 4 corresponding to the model guide rail, and described model entrance 4 runs through the sidewall paneling of shell 1.
In addition, can also be in the inner chamber of shell 1, the rear end of grip block 2 is provided with electric light source 5.Utilize the high light of electric light source 5 to make the image of projection more clear.
During use, make the shape pattern of the various needs such as triangle, square of hollow out of the lighttight material such as presspaper, as model, model is slided on the grip block 2 along the model guide rail by model entrance 4, and light is got to and is projected the geometric configuration that can demonstrate the middle hollow out of model on the projection screen plate 3 on the model again.Two models with the right-angle triangle pierced pattern are sent into from the two ends of grip block 2 respectively, and two models are in the middle amalgamation together of grip block 2, and two triangles can piece together a parallelogram.
Claims (2)
1. projection-type math teaching tool for primary school, comprise shell (1) and be arranged on the interior grip block (2) of shell (1), it is characterized in that: shell (1) is square barrel-like structure, sidewall paneling for adopting light-proof material to make around the shell (1), the front end of shell (1) is provided with projection screen plate (3), the open rearward end of shell (1), described grip block (2) is arranged between the open rearward end place of projection screen plate (3) and shell (1), it is parallel with projection screen plate (3) that transparent material is made the grip block (2) of slab construction, grip block (2) upper, lower two ends are provided with the model guide rail, the both sides of grip block (2) are provided with the model entrance (4) corresponding to the model guide rail, and described model entrance (4) runs through the sidewall paneling of shell (1).
2. projection-type math teaching tool for primary school according to claim 1 is characterized in that: in the inner chamber of shell (1), the rear end of grip block (2) is provided with electric light source (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220507849 CN202795832U (en) | 2012-09-30 | 2012-09-30 | Projection-type primary school mathematics teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220507849 CN202795832U (en) | 2012-09-30 | 2012-09-30 | Projection-type primary school mathematics teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202795832U true CN202795832U (en) | 2013-03-13 |
Family
ID=47823046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220507849 Expired - Fee Related CN202795832U (en) | 2012-09-30 | 2012-09-30 | Projection-type primary school mathematics teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202795832U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280146A (en) * | 2013-05-15 | 2013-09-04 | 中国人民解放军第三军医大学第二附属医院 | Chest imaging teaching projector |
-
2012
- 2012-09-30 CN CN 201220507849 patent/CN202795832U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280146A (en) * | 2013-05-15 | 2013-09-04 | 中国人民解放军第三军医大学第二附属医院 | Chest imaging teaching projector |
| CN103280146B (en) * | 2013-05-15 | 2015-09-02 | 中国人民解放军第三军医大学第二附属医院 | Chest Image educational projector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20130930 |