CN204965842U - Rim plate throws formula primary school mathematics teaching aid - Google Patents
Rim plate throws formula primary school mathematics teaching aid Download PDFInfo
- Publication number
- CN204965842U CN204965842U CN201520760934.5U CN201520760934U CN204965842U CN 204965842 U CN204965842 U CN 204965842U CN 201520760934 U CN201520760934 U CN 201520760934U CN 204965842 U CN204965842 U CN 204965842U
- Authority
- CN
- China
- Prior art keywords
- shell
- primary school
- wheel disc
- rim plate
- spherical shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Electrically Operated Instructional Devices (AREA)
Abstract
The utility model relates to a teaching aid that primary school's mathematical education was used, specifically speaking are rim plate throws formula primary school mathematics teaching aid. Including base, fixed mounting shell and the light source of setting in the shell on the base, the shell is the pipe column structure, and the front end fixed mounting of shell has a projection curtain board, and the rear end of shell is provided with reflection of light spherical shell, and the inner wall of reflection of light spherical shell is provided with the reflector layer, the light source sets up the focus department at reflection of light spherical shell, and the shell level sets up, and the pivot is installed through the axle bed to the lower extreme of shell, and fixed mounting has the rim plate in the pivot, is provided with the plug -in card window of fretwork on the rim plate, and on the shell, projection curtain board is provided with the draw -in groove between the spherical shell with reflecting light, the rim plate setting is in the draw -in groove. Can explain various geometric figure in the teaching very directly perceivedly to can perhaps cut apart the conversion relationship between the figure of explaining obstructed shape through the combination of figure, improve the quality and the the teaching efficiency of primary school's mathematical education.
Description
Technical field
The utility model relates to a kind of teaching aid of primary school math teaching, specifically a kind of wheel disc projection-type math teaching tool for primary school.
Background technology
In primary school math teaching, need to explain common geometric figure, as triangle, circle, parallelogram etc., and the simple conversion between these figures, as two triangles can be combined into a parallelogram, a square can be divided into two triangles etc.Do not have the aided education of teaching aid, lower student is more difficult for the understanding of figure.Chinese patent 2012205078494 discloses one " projection-type math teaching tool for primary school ", and it adopts natural light or light geometric configuration to be projected on act plate, shows feature and the relation each other thereof of various geometric configuration intuitively.A block graphics but this projection-type math teaching tool for primary school once can only project, the relation between display graphics conversion is directly perceived not, operates also cumbersome.
Summary of the invention
The purpose of this utility model is to provide simple, the easy making of a kind of structure, wheel disc projection-type math teaching tool for primary school simple to operate, reaches the object explaining simple geometry figure and conversion mutually thereof intuitively to pupil.
In order to reach above object, technical scheme that the utility model adopts is: this wheel disc projection-type math teaching tool for primary school comprises base, the light source being fixedly mounted on the shell on base and arranging in the enclosure, described shell is round tube shape structure, the front end of shell is installed with projection screen plate, the rear end of shell is provided with reflective spherical shell, the inwall of described reflective spherical shell is provided with reflector layer, described light source is arranged on the focus place of reflective spherical shell, described shell is horizontally disposed with, the lower end of shell is provided with rotating shaft by axle bed, described rotating shaft is installed with wheel disc, described wheel disc is provided with the plug-in card window of hollow out, on shell, draw-in groove is provided with between projection screen plate and reflective spherical shell, wheel disc is arranged in draw-in groove.
The spoke that described wheel disc comprises the torus concentric with rotating shaft and is connected between rotating shaft and torus, described toric edge is provided with the strip crevice towards plug-in card window, and spoke is provided with chute.
The beneficial effects of the utility model are: its structure is simple, easily make, simple to operate, various geometric figure can be explained very intuitively in teaching, and by the combination of figure or the transformational relation split between the figure explaining obstructed shape, quality and the efficiency of teaching of primary school math teaching can be improved.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the right view of Fig. 1 embodiment.
Embodiment
As Fig. 1, shown in Fig. 2, wheel disc projection-type math teaching tool for primary school described in the utility model, comprise base 9, the light source 5 being fixedly mounted on the shell 1 on base 9 and being arranged in shell 1, described shell 1 is round tube shape structure, the front end of shell 1 is installed with projection screen plate 3, the rear end of shell 1 is provided with reflective spherical shell 11, the inwall of described reflective spherical shell 11 is provided with reflector layer, described light source 5 is arranged on the focus place of reflective spherical shell 11, described shell 1 is horizontally disposed with, the lower end of shell 1 is provided with rotating shaft 21 by axle bed, described rotating shaft 21 is installed with wheel disc 2, described wheel disc 2 is provided with the plug-in card window 22 of hollow out, on shell 1, draw-in groove is provided with between projection screen plate 3 and reflective spherical shell 11, wheel disc 2 is arranged in draw-in groove.
Described wheel disc 2 comprises the torus concentric with rotating shaft 21 and is connected to the spoke 23 between rotating shaft 21 and torus, and described toric edge is provided with the strip crevice towards plug-in card window 22, spoke 23 is provided with chute 24.
During use, the character pattern of the various needs such as triangle, square of hollow out is made of lighttight materials such as presspapers, as model, slide on plug-in card window 22 by model by strip crevice and chute 24, light gets to geometric configuration model projecting again and projection screen plate 3 can demonstrate hollow out in the middle of model.
Claims (2)
1. wheel disc projection-type math teaching tool for primary school, comprise base (9), the light source (5) being fixedly mounted on the shell (1) on base (9) and being arranged in shell (1), described shell (1) is round tube shape structure, the front end of shell (1) is installed with projection screen plate (3), the rear end of shell (1) is provided with reflective spherical shell (11), the inwall of described reflective spherical shell (11) is provided with reflector layer, described light source (5) is arranged on the focus place of reflective spherical shell (11), it is characterized in that: described shell (1) is horizontally disposed with, the lower end of shell (1) is provided with rotating shaft (21) by axle bed, described rotating shaft (21) is installed with wheel disc (2), described wheel disc (2) is provided with the plug-in card window (22) of hollow out, on shell (1), draw-in groove is provided with between projection screen plate (3) and reflective spherical shell (11), wheel disc (2) is arranged in draw-in groove.
2. wheel disc projection-type math teaching tool for primary school according to claim 1, it is characterized in that: described wheel disc (2) comprises the torus concentric with rotating shaft (21) and is connected to the spoke (23) between rotating shaft (21) and torus, described toric edge is provided with the strip crevice towards plug-in card window (22), spoke (23) is provided with chute (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520760934.5U CN204965842U (en) | 2015-09-29 | 2015-09-29 | Rim plate throws formula primary school mathematics teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520760934.5U CN204965842U (en) | 2015-09-29 | 2015-09-29 | Rim plate throws formula primary school mathematics teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204965842U true CN204965842U (en) | 2016-01-13 |
Family
ID=55060892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520760934.5U Expired - Fee Related CN204965842U (en) | 2015-09-29 | 2015-09-29 | Rim plate throws formula primary school mathematics teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204965842U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108877316A (en) * | 2018-07-06 | 2018-11-23 | 王伟 | A kind of history teaching aid |
-
2015
- 2015-09-29 CN CN201520760934.5U patent/CN204965842U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108877316A (en) * | 2018-07-06 | 2018-11-23 | 王伟 | A kind of history teaching aid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202748987U (en) | Spatial geometry demonstration device with projection function | |
| CN204152118U (en) | Universal directional multifunctional decorative panel | |
| CN204965842U (en) | Rim plate throws formula primary school mathematics teaching aid | |
| CN204632149U (en) | A kind of novel Japanese pronunciation correction device | |
| CN205028532U (en) | Persistence of vision demonstrates appearance | |
| CN204614248U (en) | A kind of Chinese multimedia teaching projection arrangement | |
| CN204759840U (en) | Multiaspect orthographic projection descriptive geometry device of imparting knowledge to students | |
| CN206733888U (en) | One kind rotation hand propelled secondary modern school mathematics is given lessons with board of education instrument | |
| CN203224712U (en) | Novel projector | |
| CN105070153A (en) | Multi-surface orthographic projection drawing geometry teaching instrument | |
| CN205157968U (en) | Holographic imaging system | |
| CN203941674U (en) | A kind of portable 3D exhibiting device | |
| CN201654743U (en) | Non-projection electronic whiteboard | |
| CN207233229U (en) | Visual communication professional teaching apparatus | |
| CN205943149U (en) | Wireless multimedia teaching equipment | |
| CN204154918U (en) | A kind of circular blast microstructure light diffusing sheet | |
| CN204631436U (en) | A kind of pyramid holographic projector | |
| CN209962433U (en) | Linear projection demonstration instrument | |
| CN202764526U (en) | Advanced mathematics education plate | |
| CN205608377U (en) | Novel portable film projector | |
| CN205069030U (en) | 3D displaying advertisement tablet | |
| CN206961478U (en) | A kind of pedagogy promotional display column | |
| CN201835405U (en) | Multifunctional wall body | |
| CN202183193U (en) | Laser optical experiment instrument | |
| US2322838A (en) | Display sign |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20160929 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |