CN204263791U - A kind of geometric figure educational aid - Google Patents
A kind of geometric figure educational aid Download PDFInfo
- Publication number
- CN204263791U CN204263791U CN201420703199.XU CN201420703199U CN204263791U CN 204263791 U CN204263791 U CN 204263791U CN 201420703199 U CN201420703199 U CN 201420703199U CN 204263791 U CN204263791 U CN 204263791U
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- China
- Prior art keywords
- main scale
- layer
- geometric
- angle square
- educational aid
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Abstract
The utility model discloses a kind of geometric figure educational aid, relate to mathematics teaching aid field, comprise main scale, spline and angle square, the thickness of described main scale and angle square is 12mm, the width of described main scale is 20mm, described main scale is provided with the first measurement layer and second and measures layer, described first measurement layer has rectangular chute, one end and the slide formula of described spline are connected, described first measures layer is provided with scale area, described first measurement layer and the second hollow area measuring layer are provided with compasses penholder, described main scale one end is provided with compasses leg, one end of described angle square is connected with main scale snap close by turning cylinder, this educational aid is chi, the combination of protractor and compasses, the figure unrestricted choice mapping assembly facilitating teacher to draw as required, and required geometric figure sum functions figure can be drawn out fast, simultaneously easy to carry and use.
Description
Technical field
The utility model relates to mathematics teaching aid field, is specifically related to a kind of geometric figure educational aid.
Background technology
Geometric figure educational aid, make student can be directly perceived, the apparatus used when understanding each appliances and teachers' instruction that several teaching content uses visually, in teaching field utilization now extensively, can be described as the educational aid of mathematics teacher's indispensability, most geometric figure educational aid function is on the market very single, the geometric figure can shown to students is limited, application number is that CN201120443863.8 discloses a kind of geometric figure educational aid, comprise panel I, expansion link I, rotating shaft, axle sleeve I, panel II, expansion link II, expansion link III and axle sleeve II, one side of panel I is fixed with axle sleeve I, axle sleeve I is enclosed within rotating shaft, one side of panel II is fixed with axle sleeve II, axle sleeve II is enclosed within rotating shaft, axle sleeve I and axle sleeve II all with rotating shaft tight fit, panel I and panel II is magnetic panel.The angle of the utility model by regulating the angle of two panels and the position of three expansion links and length can demonstrate two sides, demonstrate easy and simple to handle, and it is very directly perceived, but simple geometric figure can only be demonstrated, complicated geometric figure sum functions figure is needed when running into, cannot use, be unfavorable for the quality improving teaching.
Utility model content
The purpose of this utility model is to provide a kind of geometric figure educational aid, to solve the above-mentioned defect caused in prior art.
A kind of geometric figure educational aid, comprise main scale, spline and angle square, the thickness of described main scale and angle square is 12mm, the width of described main scale is 20mm, described main scale is provided with the first measurement layer and second and measures layer, described first measurement layer has rectangular chute, one end and the slide formula of described spline are connected, described first measures layer is provided with scale area, described first measurement layer and the second hollow area measuring layer are provided with compasses penholder, described main scale one end is provided with compasses leg, one end of described angle square is connected with main scale snap close by turning cylinder.
Preferably, described main scale length is 50mm, and the radius of described angle square is 10mm.
Preferably, described second measurement layer is made up of permanent-magnet material.
Preferably, the home position of described angle square is hinged with secondary chi, and described secondary chi one end is provided with pointer.
Preferably, described spline is provided with some circular holes.
The utility model has the advantage of: this kind is for the geometry instrument of mathematics classroom teaching, contain chi, protractor, the assembly of the detachable use such as compasses, teacher can be used alone a certain assembly as required, or combinationally use certain several assembly, main scale length is 50mm, the radius of angle square is 10mm, second measures layer is made up of permanent-magnet material, be of moderate size, pass through magnet simultaneously, this educational aid can be attached on blackboard, convenient demonstration and mapping, the home position of angle square is hinged with secondary chi, secondary chi one end is provided with pointer, angle square coordinates with secondary chi, geometric figure at any angle can be drawn, spline is provided with some circular holes, spline not only can draw wave, simple circular arc can also be drawn by rotating 360 degrees.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of geometric figure educational aid described in the utility model.
Fig. 2 is the structural representation of the main scale of a kind of geometric figure educational aid described in the utility model.
Wherein: 1-main scale, 2-spline, 3-angle square, 4-first measures layer, and 5-second measures layer, 6-chute, 7-scale area, 8-compasses penholder, 9-compasses leg, the secondary chi of 10-, 11-pointer, 12-circular hole.
Detailed description of the invention
The technological means realized for making the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with detailed description of the invention, setting forth the utility model further.
As depicted in figs. 1 and 2, a kind of geometric figure educational aid, comprise main scale 1, spline 2 and angle square 3, the thickness of described main scale 1 and angle square 3 is 12mm, the width of described main scale 1 is 20mm, described main scale 1 is provided with the first measurement layer 4 and second and measures layer 5, described first measurement layer 4 has rectangular chute 6, one end and chute 6 slidingtype of described spline 2 are connected, described first measures layer 4 is provided with scale area 7, described first measurement layer 4 and the second hollow area measuring layer 5 are provided with compasses penholder 8, described main scale 1 one end is provided with compasses leg 9, one end of described angle square 3 is connected with main scale 1 snap close by turning cylinder, contain chi, protractor, the assembly of the detachable use such as compasses, teacher can be used alone a certain assembly as required, or combinationally use certain several assembly, draw required geometric figure sum functions figure.
Described main scale 1 length is 50mm, and the radius of described angle square 3 is 10mm, and described second measures layer 5 is made up of permanent-magnet material, and be of moderate size, simultaneously by magnet, this educational aid can be attached on blackboard, convenient demonstration and mapping.
It should be noted that the home position of described angle square 3 is hinged with secondary chi 10, described secondary chi 10 one end is provided with pointer 11, and angle square coordinates with secondary chi, can draw geometric figure at any angle.
In the present embodiment, described spline 2 is provided with some circular holes 12, and spline not only can draw wave, can also draw simple circular arc by rotating 360 degrees.
Based on above-mentioned, this kind of geometry instrument for mathematics classroom teaching, contain chi, protractor, the assembly of the detachable use such as compasses, teacher can be used alone a certain assembly as required, or combinationally use certain several assembly, main scale length is 50mm, the radius of angle square is 10mm, second measures layer is made up of permanent-magnet material, be of moderate size, pass through magnet simultaneously, this educational aid can be attached on blackboard, convenient demonstration and mapping, the home position of angle square is hinged with secondary chi, secondary chi one end is provided with pointer, angle square coordinates with secondary chi, geometric figure at any angle can be drawn, spline is provided with some circular holes, spline not only can draw wave, simple circular arc can also be drawn by rotating 360 degrees.
As known by the technical knowledge, the utility model can be realized by other the embodiment not departing from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, all just illustrates, is not only.Allly all to be included in the utility model within the scope of the utility model or being equal to the change in scope of the present utility model.
Claims (5)
1. a geometric figure educational aid, comprise main scale, spline and angle square, the thickness of described main scale and angle square is 12mm, the width of described main scale is 20mm, it is characterized in that: described main scale is provided with the first measurement layer and second and measures layer, described first measurement layer has rectangular chute, one end and the slide formula of described spline are connected, described first measures layer is provided with scale area, described first measurement layer and the second hollow area measuring layer are provided with compasses penholder, described main scale one end is provided with compasses leg, one end of described angle square is connected with main scale snap close by turning cylinder.
2. a kind of geometric figure educational aid according to claim 1, is characterized in that: described main scale length is 50mm, the radius of described angle square is 10mm.
3. a kind of geometric figure educational aid according to claim 1, is characterized in that: described second measures layer is made up of permanent-magnet material.
4. a kind of geometric figure educational aid according to claim 1, is characterized in that: the home position of described angle square is hinged with secondary chi, described secondary chi one end is provided with pointer.
5. a kind of geometric figure educational aid according to claim 1, is characterized in that: described spline is provided with some circular holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420703199.XU CN204263791U (en) | 2014-11-11 | 2014-11-11 | A kind of geometric figure educational aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420703199.XU CN204263791U (en) | 2014-11-11 | 2014-11-11 | A kind of geometric figure educational aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204263791U true CN204263791U (en) | 2015-04-15 |
Family
ID=52798685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420703199.XU Expired - Fee Related CN204263791U (en) | 2014-11-11 | 2014-11-11 | A kind of geometric figure educational aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204263791U (en) |
-
2014
- 2014-11-11 CN CN201420703199.XU patent/CN204263791U/en not_active Expired - Fee Related
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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: 20150415 Termination date: 20151111 |
|
| EXPY | Termination of patent right or utility model |