CN201732495U - Demonstrating device with rectangular area - Google Patents
Demonstrating device with rectangular area Download PDFInfo
- Publication number
- CN201732495U CN201732495U CN2010202749712U CN201020274971U CN201732495U CN 201732495 U CN201732495 U CN 201732495U CN 2010202749712 U CN2010202749712 U CN 2010202749712U CN 201020274971 U CN201020274971 U CN 201020274971U CN 201732495 U CN201732495 U CN 201732495U
- Authority
- CN
- China
- Prior art keywords
- rectangular area
- base plate
- bottom plate
- demonstrating
- square iron
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model provides a demonstrating device with rectangular area, belonging to the articles for demonstrating the teaching. The demonstrating device is realized by the technical scheme: the upper edge and one side edge of a bottom plate are respectively provided with a scale mark which indicates the length, the bottom plate is a double-layer structure, the four corners of the bottom plate are provided with a connecting screw bolt to connect the two layers of the bottom plate into a whole body, and a magnet is arranged between the two layers; and a putting box is arranged under the bottom plate, the putting box is internally provided with a plurality of square iron sheets, and the area of each square iron sheet is one square centimeter. The demonstrating device with rectangular area is simple in structure and simple in manufacture, and leads the students to clearly deduce the relationship between the rectangular area and the length as well as the width in the process of demonstrating.
Description
Technical field:
The utility model belongs to the teaching demonstration articles for use, particularly the rectangular area demonstration device.
Background technology:
In primary school math teaching, the maths demonstration teaching aid is less, so the teacher usually need write various contents on blackboard when giving lessons, and the various figures that draw come the teaching demonstration content, adopts the mode of writing, and the time has been grown the student and tended to feel uninteresting.The teaching demonstration teaching aid can not only can also be used to the mental factor and the nonintellectual factor of mobilizing students with solving the key issue in the teaching and strengthening some knowledge point, thus development student's intelligence, and the ability of cultivating the student is improved the quality of teaching comprehensively.
The utility model content:
The utility model overcomes the deficiency of the problems referred to above, and a kind of rectangular area demonstration device is provided, and this demonstration device is simple in structure, and is easy to make, and making the student can infer very clearly that rectangular area and its are long and wide in presentation process all has a relation.The utility model is achieved in that on the upper edge of base plate and side edge and is respectively equipped with the scale mark that indicates length, said base plate is a double-decker, four angles of base plate are provided with coupling bolt the two-layer of base plate are connected as one, and are provided with magnet between two-layer; Be provided with holder below said base plate, be placed with several square iron plates in the holder, the area of each square iron plate is one square centimeter.
Beneficial effect: the rectangular area demonstration device, simple in structure, easy to make, making the student can infer very clearly that rectangular area and its are long and wide in presentation process all has a relation.Such as long 5 centimetres when explaining one, during wide 3 centimetres rectangular area, within it portion to put area be one square centimeter square iron plate, number by the square iron plate of number, obtain rectangular area, then the numerical value of area and rectangular length and wide numerical value are compared analysis, students will have been found this relation wherein.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model; 1, base plate 2, scale mark 3, coupling bolt 4, magnet 5, square iron plate 6, holder
Embodiment:
1 embodiment is in conjunction with the accompanying drawings; The rectangular area demonstration device, form by base plate 1, magnet 4 and square iron plate 5, the upper edge of base plate 1 and a side along on be respectively equipped with the scale mark 2 that indicates length, said base plate 1 is a double-decker, four angles of base plate 1 are provided with coupling bolt 3 the two-layer of base plate 1 are connected as one, and are provided with magnet 4 between two-layer; Be provided with holder 6 below said base plate 1, be placed with several square iron plates 5 in the holder 6, the area of each square iron plate 5 is one square centimeter.
Claims (1)
1. rectangular area demonstration device, form by base plate (1), magnet (4) and square iron plate (5), it is characterized in that: the upper edge of base plate (1) and a side along on be respectively equipped with the scale mark (2) that indicates length, said base plate (1) is a double-decker, four angles of base plate (1) are provided with two-layer the connecting as one of coupling bolt (3) with base plate (1), are provided with magnet (4) between two-layer; Be provided with holder (6) below base plate (1), be placed with several square iron plates (5) in the holder (6), the area of each square iron plate (5) is one square centimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202749712U CN201732495U (en) | 2010-07-24 | 2010-07-24 | Demonstrating device with rectangular area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202749712U CN201732495U (en) | 2010-07-24 | 2010-07-24 | Demonstrating device with rectangular area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201732495U true CN201732495U (en) | 2011-02-02 |
Family
ID=43523652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202749712U Expired - Fee Related CN201732495U (en) | 2010-07-24 | 2010-07-24 | Demonstrating device with rectangular area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201732495U (en) |
-
2010
- 2010-07-24 CN CN2010202749712U patent/CN201732495U/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: 20110202 Termination date: 20110724 |