CN201979931U - Combined teaching aid for mathematics - Google Patents
Combined teaching aid for mathematics Download PDFInfo
- Publication number
- CN201979931U CN201979931U CN2011201290164U CN201120129016U CN201979931U CN 201979931 U CN201979931 U CN 201979931U CN 2011201290164 U CN2011201290164 U CN 2011201290164U CN 201120129016 U CN201120129016 U CN 201120129016U CN 201979931 U CN201979931 U CN 201979931U
- Authority
- CN
- China
- Prior art keywords
- angle
- straight ruler
- ruler
- rotating shaft
- teaching aid
- 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
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model discloses a combined teaching aid for mathematics, which comprises an angle gauge, a straight ruler and a rotating shaft, wherein a sliding groove is arranged on the straight ruler; the straight ruler and the angle gauge are sleeved on the rotating shaft through the sliding groove; angle scales are arranged on the angle gauge, and length scales are arranged on the straight ruler. The combined teaching aid has the following beneficial effects: (1) the structure is simple and the carrying is convenient; (2) the straight ruler and the angle gauge are combined together through the rotating shaft, the length scales are arranged on the straight ruler and the angle scales are arranged on the angle gauge, so that both angle and length can be measured; (3) the straight ruler can slide and rotate along the rotating shaft, so that the adjusting is quite convenient; (4) when a large angle is in measuring, the position of the straight ruler is adjusted, the bottom edge of the angle gauge leans against one edge of the angle and one edge of the straight ruler leans against the other edge of the angle, so as to avoid errors of observation through human eyes, thereby improving the angle measuring accuracy.
Description
Technical field
The utility model relates to a kind of teaching aid, particularly a kind of Combinational Mathematics teaching aid.
Background technology
In the mathematical education practice, can use protractor and ruler usually, still, existing protractor and ruler all are single products, carry very inconvenient.
Summary of the invention
Problem to be solved in the utility model is: provide a kind of simple in structure, easy to adjust, can take measurement of an angle and the Combinational Mathematics teaching aid of energy measurement length.
In order to solve the problems of the technologies described above, Combinational Mathematics teaching aid of the present utility model comprises protractor and ruler, also comprises a rotating shaft, and described ruler is provided with chute, and described ruler is socketed in the rotating shaft by chute and protractor; Described protractor is provided with angle index, and described ruler is provided with the length scale.
The beneficial effect that the utility model is obtained is: (1) is simple in structure, is easy to carry; (2) ruler and protractor are combined by rotating shaft, ruler is provided with the length scale, and protractor is provided with angle index, thereby can take measurement of an angle, again energy measurement length; (3) ruler can slide along rotating shaft, can rotate along rotating shaft again, thereby adjust very convenient; When (4) measuring the large scale angle, by adjusting the position of ruler, the base of protractor is leaned against on the limit of angle, one side on the other limit that leans against angle with ruler, thereby avoided the error of eye-observation, improve the degree of accuracy of angular surveying.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, rotating shaft, 2, the length scale, 3, chute, 4, angle index, 5, protractor, 6, ruler.
The specific embodiment
As shown in Figure 1, Combinational Mathematics teaching aid of the present utility model comprises protractor 5 and ruler 6, also comprises a rotating shaft 1, and described ruler 6 is provided with chute 3, and described ruler 6 is socketed in the rotating shaft 1 by chute 3 and protractor 5; Described protractor 5 is provided with angle index 4, and described ruler 6 is provided with length scale 2.
Combinational Mathematics teaching aid of the present utility model, ruler 6 and protractor 5 are combined by rotating shaft 1, and ruler 6 is provided with length scale 2, and protractor 5 is provided with angle index 4, thereby can take measurement of an angle, again energy measurement length.
Combinational Mathematics teaching aid of the present utility model, ruler 6 can slide along rotating shaft 1 by chute 3, can rotate along rotating shaft 1 again, thereby be convenient to adjust the position of ruler 6 with respect to protractor 5, and is very convenient.
Combinational Mathematics teaching aid of the present utility model, when measuring the large scale angle, the position of adjustment amount hornwork 5 and ruler 6, the base of protractor 5 is leaned against on the limit of angle, one side of ruler 6 is leaned against on the other limit of angle, thereby avoided the error of eye-observation, improved the degree of accuracy of angular surveying.
The utility model is not limited to above-mentioned embodiment, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or close technical scheme, all fall within the protection domain of the present utility model.
Claims (1)
1. a Combinational Mathematics teaching aid comprises protractor (5) and ruler (6), it is characterized in that: also comprise a rotating shaft (1), described ruler (6) is provided with chute (3), and described ruler (6) is socketed in the rotating shaft (1) by chute (3) and protractor (5); Described protractor (5) is provided with angle index (4), and described ruler (6) is provided with length scale (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201290164U CN201979931U (en) | 2011-04-28 | 2011-04-28 | Combined teaching aid for mathematics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201290164U CN201979931U (en) | 2011-04-28 | 2011-04-28 | Combined teaching aid for mathematics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201979931U true CN201979931U (en) | 2011-09-21 |
Family
ID=44607399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201290164U Expired - Fee Related CN201979931U (en) | 2011-04-28 | 2011-04-28 | Combined teaching aid for mathematics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201979931U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190023412A (en) * | 2017-08-29 | 2019-03-08 | (주)성안기술단 | device for measuring damage in levee |
| CN110186359A (en) * | 2019-06-28 | 2019-08-30 | 曹仁风 | A kind of kitchen table installation measuring tool |
| CN112504087A (en) * | 2020-11-20 | 2021-03-16 | 河南航天精工制造有限公司 | Outer chamfer angle measuring device |
-
2011
- 2011-04-28 CN CN2011201290164U patent/CN201979931U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190023412A (en) * | 2017-08-29 | 2019-03-08 | (주)성안기술단 | device for measuring damage in levee |
| KR101982738B1 (en) | 2017-08-29 | 2019-05-27 | (주)성안기술단 | device for measuring damage in levee |
| CN110186359A (en) * | 2019-06-28 | 2019-08-30 | 曹仁风 | A kind of kitchen table installation measuring tool |
| CN112504087A (en) * | 2020-11-20 | 2021-03-16 | 河南航天精工制造有限公司 | Outer chamfer angle measuring device |
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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: 20110921 Termination date: 20120428 |