CN201946174U - Parallelogram demonstrator for teaching - Google Patents
Parallelogram demonstrator for teaching Download PDFInfo
- Publication number
- CN201946174U CN201946174U CN2011200702557U CN201120070255U CN201946174U CN 201946174 U CN201946174 U CN 201946174U CN 2011200702557 U CN2011200702557 U CN 2011200702557U CN 201120070255 U CN201120070255 U CN 201120070255U CN 201946174 U CN201946174 U CN 201946174U
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- teaching
- parallelogram
- annulus
- demonstrator
- fixed strip
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Abstract
The utility model provides a parallelogram demonstrator for teaching, belonging to a teaching aid. The parallelogram demonstrator for teaching structurally comprises a circular ring, wherein a fixed bar is horizontally arranged in the circular ring, the center of the fixed bar is rotatably connected with a movable bar through a rotating shaft, rotating wheels are arranged at the end parts of the movable bar and the fixed bar, the distances between the rotating wheels and the circle center of the circular ring are equal, and an elastic band is arranged on the rotating wheels. Compared with the prior art, the novel parallelogram demonstrator for teaching has the characteristics of reasonable design, simple structure, convenience in use and the like, the interestingness in teaching is improved, and the improvement of a teaching environment and the improvement of teaching quality are facilitated.
Description
Technical field
The utility model relates to a kind of mathematical education aid, a kind of specifically teaching parallelogram demonstration device.
Background technology
When in primary school math teaching, lecturing the polygon geometric figure, especially quadrilateral, as rhombus, common parallelogram, rectangle, square etc., need the elaboration of on blackboard, drawing repeatedly, can reach the purpose of explanation, this form of teaching is more stiff, and is vivid inadequately, and it is bored that the student is produced.In order to address this problem, many some presentation tool of teacher's manual designs, these instruments substantially all are to be spliced by wood lath, be difficult for during use regulating, efficient is lower in teaching demonstration, the student is lacked interest and appeal, increased teacher's labour intensity, be an impediment to the improvement of teaching environment and the raising of quality of instruction.
Summary of the invention
Technical assignment of the present utility model is to solve the deficiencies in the prior art, and a kind of teaching simple in structure, easy to use parallelogram demonstration device is provided.
The technical solution of the utility model realizes in the following manner, this teaching parallelogram demonstration device, its structure comprises annulus, in the annulus inner horizontal one fixed strip is set, the center of this fixed strip is rotatably connected to activity bar by rotating shaft, the end of above-mentioned activity bar, fixed strip is provided with runner, and all runners are all identical apart from the distance in the annulus center of circle, installs on the described runner and is provided with elastic webbing.
Evenly indicate scale on the described annulus.
The beneficial effect that the utility model is compared with prior art produced is:
A kind of teaching of the present utility model with the parallelogram demonstration device have simple in structure, easy to use, characteristics such as be easy to regulate, be skillfully constructed, design has movable parallelogram sturcutre in annulus, annulus cooperates scale to can be used as the graphometer use, tetragonal structure then can be used for demonstrating intuitively different parallelogram, thereby make teaching process vivid, improve the interest of teaching, help the improvement of teaching environment and the raising of quality of instruction.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model.
Mark in the accompanying drawing is represented respectively:
1, annulus, 2, rotating shaft, 3, runner, 4, activity bar, 5, fixed strip, 6, scale, 7, elastic webbing.
Embodiment
Below in conjunction with accompanying drawing teaching of the present utility model is done following detailed description the in detail with the parallelogram demonstration device.
As shown in Figure 1, this teaching parallelogram demonstration device, its structure comprises annulus 1, in annulus 1 inner horizontal one fixed strip 5 is set, the center of this fixed strip 5 is rotatably connected to activity bar 4 by rotating shaft 2, above-mentioned activity bar 4, the end of fixed strip 5 is provided with runner 3, all runners 3 are all identical apart from the distance in annulus 1 center of circle, install on the described runner 3 and be provided with elastic webbing 7, only need regulate the distance of activity bar 4 when in use according to the teaching needs, elastic webbing 7 will cooperate the various parallelogram of formation, presentation process visual pattern with runner 3, help the student to understand, improve teaching interest and quality of instruction.
Evenly indicate scale 6 on the described annulus 1, annulus 1 just can be used as the graphometer use like this, thereby increases the functions of use of this demonstration device.
Claims (2)
1. impart knowledge to students and use the parallelogram demonstration device, it is characterized in that comprising annulus, in the annulus inner horizontal one fixed strip is set, the center of this fixed strip is rotatably connected to activity bar by rotating shaft, the end of above-mentioned activity bar, fixed strip is provided with runner, all runners are all identical apart from the distance in the annulus center of circle, install on the described runner and are provided with elastic webbing.
2. teaching parallelogram demonstration device according to claim 1 is characterized in that evenly indicating on the described annulus scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200702557U CN201946174U (en) | 2011-03-17 | 2011-03-17 | Parallelogram demonstrator for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200702557U CN201946174U (en) | 2011-03-17 | 2011-03-17 | Parallelogram demonstrator for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201946174U true CN201946174U (en) | 2011-08-24 |
Family
ID=44473511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200702557U Expired - Fee Related CN201946174U (en) | 2011-03-17 | 2011-03-17 | Parallelogram demonstrator for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201946174U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107818716A (en) * | 2017-12-27 | 2018-03-20 | 张凤菊 | A kind of Pythagorean theorem apparatus for demonstrating |
-
2011
- 2011-03-17 CN CN2011200702557U patent/CN201946174U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107818716A (en) * | 2017-12-27 | 2018-03-20 | 张凤菊 | A kind of Pythagorean theorem apparatus for demonstrating |
| CN108109484A (en) * | 2017-12-27 | 2018-06-01 | 张凤菊 | A kind of Pythagorean theorem apparatus for demonstrating that can be adjusted in right amount |
| CN108109484B (en) * | 2017-12-27 | 2021-06-22 | 周口师范学院 | Pythagorean theorem demonstration device capable of being adjusted in proper amount |
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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: 20110824 Termination date: 20120317 |