CN203331653U - Plane geometry teaching aid - Google Patents
Plane geometry teaching aid Download PDFInfo
- Publication number
- CN203331653U CN203331653U CN2013204015914U CN201320401591U CN203331653U CN 203331653 U CN203331653 U CN 203331653U CN 2013204015914 U CN2013204015914 U CN 2013204015914U CN 201320401591 U CN201320401591 U CN 201320401591U CN 203331653 U CN203331653 U CN 203331653U
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- CN
- China
- Prior art keywords
- ruler
- teaching aid
- plane geometry
- geometry teaching
- connecting axle
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- 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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- 229910003460 diamond Inorganic materials 0.000 abstract 1
- 239000010432 diamond Substances 0.000 abstract 1
- 238000012913 prioritisation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model provides a plane geometry teaching aid which comprises a first ruler, a second ruler, a third ruler and a fourth ruler. The plane geometry teaching aid is characterized in that the length of the third ruler is equal to that of the fourth ruler, the two ends of the third ruler are hinged to one end of the first ruler and one end of the second ruler respectively, connecting shafts are arranged at the two ends of the fourth ruler respectively, the fourth ruler is respectively connected with the first ruler and the second ruler through the connecting shafts, and a plurality of first connecting holes are formed in the first ruler and the second ruler respectively and matched with the connecting shafts. The plane geometry teaching aid is simple and easy and convenient to operate, and can dynamically demonstrate definitions, properties, judgments and relations from generalization to specialty of various special quadrangles such as a rhomboid, a rectangle, a diamond, a square and an isosceles trapezoid, so that a teacher gives lessons conveniently, and students learn and understand conveniently.
Description
Technical field
The utility model relates to a kind of middle school mathematics teaching aid, specifically, relates to a kind of plane geometry teaching aid.
Background technology
At present, when High-school Mathematics Teachers is imparted knowledge to students the content of " quadrangle " on classroom, basically draw and analyze without teaching aid but on blackboard, indivedual teaching aids that use are all to make by hand but cost is higher, and more inflexible fixing not easy to operate again, be unfavorable for cultivating the student and observe the geometric essence of understanding by the angle of motion change.
The utility model content
The purpose of this utility model is to overcome the weak point of above-mentioned conventional art, provides a kind of simple and easy to do, capable of dynamic to demonstrate various special quadrilaterals---definition, character and the judgement of parallelogram, rectangle, rhombus, square, isosceles trapezoid and between them by generally to the plane geometry teaching aid of special relation.
The technical solution of the utility model is:
A kind of plane geometry teaching aid, comprise the first ruler, the second ruler, the 3rd ruler and the 4th ruler, it is characterized in that: the 3rd ruler and the 4th ruler are equal in length, the two ends of the 3rd ruler are hinged respectively at an end of the first ruler and the second ruler, the two ends of the 4th ruler are respectively equipped with connecting axle, the 4th ruler is connected with the second ruler with the first ruler respectively by connecting axle, is respectively equipped with the first connecting hole that several match with connecting axle on the first ruler and the second ruler.
A kind of concrete prioritization scheme, described the 3rd ruler and the 4th ruler two ends are plugged with respectively protractor.
A kind of concrete prioritization scheme, described protractor comprises stiff end and measuring junction, and measuring junction is for establishing graduated semi-circle ruler, and stiff end is provided with joint pin.
A kind of concrete prioritization scheme, described the 3rd ruler and the 4th ruler two ends are respectively equipped with the second connecting hole matched with joint pin.
A kind of plane geometry teaching aid of the utility model is simple and easy to do, capable of dynamic is demonstrated various special quadrilaterals---definition, character and the judgement of parallelogram, rectangle, rhombus, square, isosceles trapezoid and between them by general to special relation, be convenient to teacher and give lessons, be convenient to Students ' Learning and understand.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The accompanying drawing explanation
Fig. 1 is the structural representation of a kind of plane geometry teaching aid of the utility model;
Fig. 2 is the structural representation of the 4th ruler described in Fig. 1;
Fig. 3 is the structural representation of the protractor described in Fig. 1.
In figure: 1-the first ruler; 2-the first connecting hole; The 3-protractor; 4-the second connecting hole; 5-the 4th ruler; 6-the second ruler; 7-the 3rd ruler; The 8-connecting axle; The 31-stiff end; The 32-measuring junction; The 33-joint pin.
The specific embodiment
Embodiment: as depicted in figs. 1 and 2, a kind of plane geometry teaching aid, comprise the first ruler 1, the second ruler 6, the 3rd ruler 7 and the 4th ruler 5, the 3rd ruler 7 and the 4th ruler 5 are equal in length, the two ends of the 3rd ruler 7 are hinged with an end of the first ruler 1 and the second ruler 6 respectively, the two ends of the 4th ruler 5 are respectively equipped with connecting axle 8, the 4th ruler 5 is connected with the second ruler 6 with the first ruler 1 respectively by connecting axle 8, is respectively equipped with the first connecting hole 2 that several match with connecting axle 8 on the first ruler 1 and the second ruler 6.
Described the 3rd ruler 7 and the 4th ruler 5 two ends are plugged with respectively protractor 3.
As shown in Figure 3, described protractor 3 comprises stiff end 31 and measuring junction 32, and measuring junction 32 is for establishing graduated semi-circle ruler, and stiff end 31 is provided with joint pin 33.
Described the 3rd ruler 7 and the 4th ruler 5 two ends are respectively equipped with the second connecting hole 4 matched with joint pin 33.
During teaching demonstration, according to the figure that will explain, the 4th ruler 5 is inserted into to suitable position, regulate the angle between the 3rd ruler 7 and the first ruler 1 and the second ruler 6, protractor 3 is plugged on the 3rd ruler 7 and the 4th ruler 5, the good angle of use amount hornwork 3 amounts, keep the first ruler 1 parallel with the second ruler 6, measure the angle between the 4th ruler 5 and the first ruler 1 and the second ruler 6, thereby draw parallelogram, rectangle, rhombus, square, the definition of isosceles trapezoid, character and judgement and between them by general to special relation, this process can be by teacher's explaining illustration, also can make student's exploratory development voluntarily, be convenient to the student more directly perceived, understand more clearly parallelogram, some rules between the geometric figures such as isosceles trapezoid.
Claims (4)
1. a plane geometry teaching aid, comprise the first ruler (1), the second ruler (6), the 3rd ruler (7) and the 4th ruler (5), it is characterized in that: the 3rd ruler (7) and the 4th ruler (5) are equal in length, the two ends of the 3rd ruler (7) are hinged with an end of the first ruler (1) and the second ruler (6) respectively, the two ends of the 4th ruler (5) are respectively equipped with connecting axle (8), the 4th ruler (5) is connected with the second ruler (6) with the first ruler (1) respectively by connecting axle (8), be respectively equipped with the first connecting hole (2) that several match with connecting axle (8) on the first ruler (1) and the second ruler (6).
2. a kind of plane geometry teaching aid according to claim 1, it is characterized in that: described the 3rd ruler (7) and the 4th ruler (5) two ends are plugged with respectively protractor (3).
3. a kind of plane geometry teaching aid according to claim 2, it is characterized in that: described protractor (3) comprises stiff end (31) and measuring junction (32), measuring junction (32) is for establishing graduated semi-circle ruler, and stiff end (31) is provided with joint pin (33).
4. a kind of plane geometry teaching aid according to claim 3, it is characterized in that: described the 3rd ruler (7) and the 4th ruler (5) two ends are respectively equipped with the second connecting hole (4) matched with joint pin (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204015914U CN203331653U (en) | 2013-06-29 | 2013-06-29 | Plane geometry teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204015914U CN203331653U (en) | 2013-06-29 | 2013-06-29 | Plane geometry teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203331653U true CN203331653U (en) | 2013-12-11 |
Family
ID=49700350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204015914U Expired - Fee Related CN203331653U (en) | 2013-06-29 | 2013-06-29 | Plane geometry teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203331653U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781475A (en) * | 2021-01-29 | 2021-05-11 | 三门峡戴卡轮毂制造有限公司 | Multifunctional deformation ruler for industrial measurement |
-
2013
- 2013-06-29 CN CN2013204015914U patent/CN203331653U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781475A (en) * | 2021-01-29 | 2021-05-11 | 三门峡戴卡轮毂制造有限公司 | Multifunctional deformation ruler for industrial measurement |
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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: 20131211 Termination date: 20140629 |
|
| EXPY | Termination of patent right or utility model |