CN202632597U - Primary school triangle area display device - Google Patents
Primary school triangle area display device Download PDFInfo
- Publication number
- CN202632597U CN202632597U CN 201220344538 CN201220344538U CN202632597U CN 202632597 U CN202632597 U CN 202632597U CN 201220344538 CN201220344538 CN 201220344538 CN 201220344538 U CN201220344538 U CN 201220344538U CN 202632597 U CN202632597 U CN 202632597U
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- CN
- China
- Prior art keywords
- triangle
- galvanized iron
- display device
- primary school
- buckyballs
- 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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Abstract
The utility model discloses a primary school triangle area display device, relating to the technical field of teaching aids. The primary school triangle area display device consists of a rectangular galvanized iron sheet plate, baffles, buckyballs and magnetic stripes with scales, wherein the rectangular galvanized iron sheet plate is surrounded by the baffles to form a box; and scale marks are printed on two adjacent sides of the rectangular galvanized iron sheet plate. Preferably, 1,000-2,000 buckyballs are provided. Furthermore, 2-6 magnetic stripes with scales are provided, and the length thereof is greater than or equal to that of the short side of the rectangular galvanized iron sheet plate. Compared with the existing teaching method, the device disclosed by the utility model is visual in teaching, simple in structure and easy to make and explain; and by manually moving the buckyballs, the area occupied by a triangle is transformed into the area of an equal-bottom familiar rectangle so as to reckon the area formula of the triangle, thus the profound theoretical knowledge can be simplified.
Description
Technical field
The utility model relates to a kind of primary school mathematics teaching aid, is primary school's triangle area display device specifically.
Background technology
In primary school math teaching and study; Need to understand the triangle area formula; Traditional way is to convert rectangle, square or parallelogram etc. to picture mosaic calculating; And the origin of how to show area and corresponding rectangular relation and formula does not intuitively have the teaching aid and the learning aid of this respect.
The utility model content
The purpose of the utility model is the deficiency to present mathematics triangle area knowledge teaching, and a kind of primary school triangle area display device is provided.
The purpose of the utility model realizes through following technological means: primary school's triangle area display device; Magnetic stripe by rectangle galvanized iron dermatotome, baffle plate, buckyballs and band scale is formed; Have baffle plate to be surrounded as box around the said rectangle galvanized iron dermatotome, two limits that rectangle galvanized iron dermatotome is adjacent are printed with scale mark.
As preferably, said buckyballs has 1000～2000.
Further, the magnetic stripe of said band scale has 2～6, and its length is more than or equal to the minor face of rectangle galvanized iron dermatotome.
Compare with existing form of teaching; The utlity model has impart knowledge to students directly perceived, features simple structure; Be easy to make and explanation,, be converted into the shared area of triangle and wait the familiar rectangular area in the end through starting to move buckyballs; Thereby extrapolate leg-of-mutton area formula, can the knowwhy of profundity be oversimplified.
Description of drawings
Fig. 1 is the utility model synoptic diagram.
1. rectangle galvanized iron dermatotomes wherein, 2. baffle plate, 3. scale mark, 4. buckyballs, the 5. magnetic stripe of band scale.
Embodiment
Below in conjunction with description of drawings the utility model is done further to describe in detail:
The use of this primary school triangle area display device is: utilize the magnetic stripe 5 of two band scales and baffle plate 2 to form a triangle, buckyballs 4 is filled in the triangle, then buckyballs 4 has been represented leg-of-mutton area, writes down the corresponding leg-of-mutton end and height; With buckyballs 4 push and block one jiao, forms a rectangle (or square) again, at this moment can read the length of correspondence and wide, and then obtain area to the band scale mark 3 of rectangle galvanized iron dermatotome 1.At the bottom of gained area and the triangle and half of high product relatively can find the origin of triangle area, and then verified the triangle area formula.
In a word, the utility model provides primary school's triangle area display device.The above; Be merely a part of embodiment of the utility model; The protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.
Claims (3)
1. primary school's triangle area display device; Magnetic stripe (5) by rectangle galvanized iron dermatotome (1), baffle plate (2), buckyballs (4) and band scale is formed; It is characterized in that: said rectangle galvanized iron dermatotome (1) has baffle plate (2) to be surrounded as box all around, and two limits that rectangle galvanized iron dermatotome (1) is adjacent are printed with scale mark (3).
2. primary school according to claim 1 triangle area display device is characterized in that: said buckyballs (4) has 1000～2000.
3. primary school according to claim 1 triangle area display device is characterized in that: the magnetic stripe of said band scale (5) has 2～6, and its length is more than or equal to the minor face of rectangle galvanized iron dermatotome (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220344538 CN202632597U (en) | 2012-07-08 | 2012-07-08 | Primary school triangle area display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220344538 CN202632597U (en) | 2012-07-08 | 2012-07-08 | Primary school triangle area display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202632597U true CN202632597U (en) | 2012-12-26 |
Family
ID=47385765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220344538 Expired - Fee Related CN202632597U (en) | 2012-07-08 | 2012-07-08 | Primary school triangle area display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202632597U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110718122A (en) * | 2019-11-20 | 2020-01-21 | 徐蓉 | Area demonstration device |
-
2012
- 2012-07-08 CN CN 201220344538 patent/CN202632597U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110718122A (en) * | 2019-11-20 | 2020-01-21 | 徐蓉 | Area demonstration 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: 20121226 Termination date: 20130708 |