CN202879056U - Teaching tool for primary school mathematics - Google Patents
Teaching tool for primary school mathematics Download PDFInfo
- Publication number
- CN202879056U CN202879056U CN 201220631686 CN201220631686U CN202879056U CN 202879056 U CN202879056 U CN 202879056U CN 201220631686 CN201220631686 CN 201220631686 CN 201220631686 U CN201220631686 U CN 201220631686U CN 202879056 U CN202879056 U CN 202879056U
- Authority
- CN
- China
- Prior art keywords
- protractor
- teaching
- right triangle
- primary school
- teaching tool
- 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
Abstract
The utility model discloses a teaching tool for primary school mathematics. The teaching tool comprises a protractor, wherein a right triangle and an isosceles right triangle are formed in the middle part of the protractor; and a rotary ruler is connected at the circle center of the protractor by a rotary shaft. According to the teaching tool disclosed by the utility model, the protractor, the right triangle and the isosceles right triangle are combined to be an integer, so that not only can measuring and drawing of angle be realized, but also the angle measurement is clear and striking for the students to conveniently view and learn. Moreover, the learning efficiency of the students can be improved, the teaching tools are not needed to be frequently changed by the teacher during a drawing process, and so the drawing speed and the teaching efficiency can be improved, and the straight lines can be conveniently drawn by virtue of the rotary ruler.
Description
Technical field
The utility model relates to a kind of teaching aid for teaching in primary school, belongs to the educational outfit technical field.
Background technology
In pupil's mathematical studying, how association takes measurement of an angle and draw as requested the angle with certain angle is the knowledge that must grasp.Teacher is in teaching process, when the use amount hornwork carries out the measurement of angle and draws, the student can not clearly be observed, especially the student who sits in the back row, affected like this student's study, and on the math teacher class hour employed drawing appliance have ruler and protractor etc. a lot, the function singleness of these instruments, as ruler can only draw straight line, protractor can only take measurement of an angle, so teacher need to ceaselessly change teaching aid when drawing, affect mapping speed, reduced efficiency of teaching, use inconvenient.
The utility model content
Problem to be solved in the utility model is for overcoming above-mentioned technological deficiency, providing a kind of function many, the teaching aid for teaching in primary school that efficiency of teaching is high.
In order to address the above problem, the utility model is by the following technical solutions: a kind of teaching aid for teaching in primary school, comprise protractor, the centre of described protractor is provided with right angled triangle, isosceles right triangle, and the home position of described protractor is connected with rotary ruler combination by rotating shaft.
Below be further improvement of the utility model:
Be respectively equipped with scale on described right angled triangle, adjacent two right-angle sides of isosceles right triangle.
The utility model adopts such scheme, protractor, right angled triangle, isosceles right triangle are combined into one, not only can realize measurement and the drafting of angle, and can make take measurement of an angle clear, eye-catching, be convenient to student viewing, study, can improve student's learning efficiency, avoid teacher when drawing, ceaselessly to change teaching aid, can improve mapping speed and efficiency of teaching, arranging of rotary ruler combination can make things convenient for the picture straight line.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model embodiment.
Among the figure: the 1-protractor; The 2-right angled triangle; The 3-isosceles right triangle; The 4-rotary ruler combination; The 5-rotating shaft.
The specific embodiment
Embodiment, as shown in Figure 1, a kind of teaching aid for teaching in primary school comprises protractor 1, and the centre of described protractor 1 is provided with right angled triangle 2, isosceles right triangle 3, and the home position of described protractor 1 is connected with rotary ruler combination 4 by rotating shaft 5.
Be respectively equipped with scale on described right angled triangle 2, isosceles right triangle 3 adjacent two right-angle sides.
The utility model adopts technique scheme, protractor 1, right angled triangle 2, isosceles right triangle 3 are combined into one, not only can realize measurement and the drafting of angle, and can make take measurement of an angle clear, eye-catching, be convenient to student viewing, study, can improve student's learning efficiency, avoid teacher when drawing, ceaselessly to change teaching aid, can improve mapping speed and efficiency of teaching, arranging of rotary ruler combination 4 can make things convenient for the picture straight line.
Claims (2)
1. teaching aid for teaching in primary school, comprise protractor (1), it is characterized in that: the centre of described protractor (1) is provided with right angled triangle (2), isosceles right triangle (3), and the home position of described protractor (1) is connected with rotary ruler combination (4) by rotating shaft (5).
2. a kind of teaching aid for teaching in primary school according to claim 1 is characterized in that: be respectively equipped with scale on described right angled triangle (2), adjacent two right-angle sides of isosceles right triangle (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220631686 CN202879056U (en) | 2012-11-15 | 2012-11-15 | Teaching tool for primary school mathematics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220631686 CN202879056U (en) | 2012-11-15 | 2012-11-15 | Teaching tool for primary school mathematics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202879056U true CN202879056U (en) | 2013-04-17 |
Family
ID=48070516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220631686 Expired - Fee Related CN202879056U (en) | 2012-11-15 | 2012-11-15 | Teaching tool for primary school mathematics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202879056U (en) |
-
2012
- 2012-11-15 CN CN 201220631686 patent/CN202879056U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20131115 |