CN202871148U - Pythagorean theorem demonstration teaching tool - Google Patents
Pythagorean theorem demonstration teaching tool Download PDFInfo
- Publication number
- CN202871148U CN202871148U CN 201220627240 CN201220627240U CN202871148U CN 202871148 U CN202871148 U CN 202871148U CN 201220627240 CN201220627240 CN 201220627240 CN 201220627240 U CN201220627240 U CN 201220627240U CN 202871148 U CN202871148 U CN 202871148U
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- pythagorean theorem
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Abstract
The utility model provides a pythagorean theorem demonstration teaching tool, and belongs to the technical field of teaching tools. The pythagorean theorem demonstration teaching tool provided by the utility model is simple in structure and convenient to use, and enables students to fully understand the pythagorean theorem. The pythagorean theorem demonstration teaching tool comprises a bottom plate, four rectangular plates and a quadrate plate. The pythagorean theorem demonstration teaching tool is characterized in that the bottom plate is 600mm in length and 400mm in width; a metal plate is arranged in the bottom plate; magnets are arranged in the rectangular plates and the quadrate plate; the rectangular plates are 119mm in length and 29.25mm in width; the quadrate plate is 89mm in the length of a side; a first concave groove, a second concave groove and a third concave groove are formed on the surface of the bottom plate; the first concave groove is in shape of a square with side length of 90mm; the second concave groove is in shape of a square with side length of 120mm; the third concave groove is in shape of a square with side length of 150mm; and the first concave groove, the second concave groove and the third concave groove encircle a right triangular area.
Description
Technical field
The utility model belongs to the teaching aid technical field, and specifically, the utility model relates to a kind of Pythagorean theorem demonstration teaching aid.
Background technology
For the sophomoric student in junior middle school, although the proof of more contacted theorems proves that just line segment equates, line segment and etc.; Quadratic sum or the first time for line segment run into, and this will bring certain difficulty to them.The difficult point that the necessity that proves in addition and thinking also can become the student.
Present teaching method only is to draw by books or at blackboard to help student's understanding, but this method is not directly perceived, and the students difficulty is larger.
At present also not for the teaching demonstration instrument of Pythagorean theorem special use, this explains Pythagorean theorem to teacher, and the teaching of the quadratic sum of line segment has brought very large difficulty on the market.
Summary of the invention
The utility model is exactly for the problems referred to above, provide a kind of simple in structure, easy to use, can allow the student fully understand the Pythagorean theorem demonstration teaching aid of Pythagorean theorem.
For reaching above-mentioned purpose of the present utility model, the utility model adopts following technical scheme, and the utility model comprises a base plate, four rectangular slabs and a square plate, it is characterized in that: the long 600mm of being of described base plate, wide is 400mm, is provided with iron plate in the base plate; Be provided with magnet in described rectangular slab and the square plate; The length of rectangular slab is 119 mm, and wide is 29.25mm, and the length of side of square plate is 89mm; Described backplate surface is provided with the first groove, the second groove and the 3rd groove, the first groove is that the length of side is the square of 90mm, the second groove is that the length of side is the square of 120mm, the 3rd groove is that the length of side is the square of 150mm, and described the first groove, the second groove and the 3rd groove surround a right-angle triangle zone.
As a kind of preferred version of the present utility model, described base plate top is provided with hook.
The beneficial effects of the utility model: 1, simple in structure: the utility model only comprises a base plate, four rectangular slabs and a square plate, and its member is few, and is simple in structure.Be easy to production and processing, cost of manufacture is cheap.
2, easy to use: as when the utility model uses, can first square plate to be positioned in the first groove, again four rectangular slabs to be positioned in the second groove; Demonstration can together move to square plate and rectangular slab in the 3rd groove during Pythagorean theorem, can allow thus the student see, the quadratic sum of triangle two right-angle sides and hypotenuse square equate that method of operating is simple, easy to use.
In addition, because the special size of the utility model square plate and rectangular slab, rectangular slab and square plate can be put in the first groove, the second groove and the 3rd groove very easily, and be more easy to use.
At last, the utility model is provided with hook above base plate, the utility model can be placed on the blackboard, and the student of being convenient in the classroom shows.
3, the performance Pythagorean theorem that the utility model can image is convenient to the student and is understood, and has solved the difficult problem of teacher in the Pythagorean theorem teaching.
Description of drawings
Fig. 1 is structural representation of the present utility model.
1 is that the first groove, 2 is that square plate, 3 is that mark line, 4 is that hook, 5 is that the 3rd groove, 6 is that rectangular slab, 7 is that the second groove, 8 is that iron plate, 9 is that base plate, 10 is magnet in the accompanying drawing.
Embodiment
The utility model comprises 9, four rectangular slabs 6 of a base plate and a square plate 2, and described base plate 9 length are 600mm, and wide is 400mm, is provided with iron plate 8 in the base plate 9; Be provided with magnet 10 in described rectangular slab 6 and the square plate 2; The length of rectangular slab 6 is 119 mm, and wide is 29.25mm, and the length of side of square plate 2 is 89mm; Described base plate 9 surfaces are provided with the first groove 1, the second groove 7 and the 3rd groove 5, the first groove 1 is the square of 90mm for the length of side, the second groove 7 is that the length of side is the square of 120mm, the 3rd groove 5 is that the length of side is the square of 150mm, and described the first groove 1, the second groove 7 and the 3rd groove 5 surround a right-angle triangle zone.
As a kind of preferred version of the present utility model, described base plate 9 tops are provided with hook 4.
Be provided with mark line 3 corresponding to four rectangular slabs 6 in described the second groove 7; Also be provided with mark line 3 corresponding to four rectangular slabs 6 around a square plate 2 and the square plate 2 in described the 3rd groove 5.
Above content is the further description of the utility model being done in conjunction with concrete preferred implementation; can not assert that implementation of the present utility model is confined to these explanations; for the utility model person of an ordinary skill in the technical field; without departing from the concept of the premise utility; can also make some simple deduction or replace, all should be considered as belonging to the definite protection domain of claims that the utility model is submitted to.
Claims (3)
1. the Pythagorean theorem demonstration teaching aid comprises a base plate (9), and four rectangular slabs (6) and a square plate (2) is characterized in that: described base plate (9) is long to be 600mm, and wide is 400mm, is provided with iron plate (8) in the base plate (9); Be provided with magnet (10) in described rectangular slab (6) and the square plate (2); The length of rectangular slab (6) is 119 mm, and wide is 29.25mm, and the length of side of square plate (2) is 89mm; Described base plate (9) surface is provided with the first groove (1), the second groove (7) and the 3rd groove (5), the first groove (1) is the square of 90mm for the length of side, the second groove (7) is that the length of side is the square of 120mm, the 3rd groove (5) is that the length of side is the square of 150mm, and described the first groove (1), the second groove (7) and the 3rd groove (5) surround a right-angle triangle zone.
2. Pythagorean theorem demonstration teaching aid according to claim 1 is characterized in that: be provided with hook (4) above the described base plate (9).
3. Pythagorean theorem demonstration teaching aid according to claim 1 is characterized in that: be provided with mark line (3) corresponding to four rectangular slabs (6) in described the second groove (7); Also be provided with mark line (3) corresponding to a square plate (2) and square plate (2) four rectangular slabs (6) on every side in described the 3rd groove (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220627240 CN202871148U (en) | 2012-11-26 | 2012-11-26 | Pythagorean theorem demonstration teaching tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220627240 CN202871148U (en) | 2012-11-26 | 2012-11-26 | Pythagorean theorem demonstration teaching tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202871148U true CN202871148U (en) | 2013-04-10 |
Family
ID=48037846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220627240 Expired - Fee Related CN202871148U (en) | 2012-11-26 | 2012-11-26 | Pythagorean theorem demonstration teaching tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202871148U (en) |
-
2012
- 2012-11-26 CN CN 201220627240 patent/CN202871148U/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: 20130410 Termination date: 20131126 |