CN2354777Y - Mathematic teaching board for pupils - Google Patents
Mathematic teaching board for pupils Download PDFInfo
- Publication number
- CN2354777Y CN2354777Y CN 98249624 CN98249624U CN2354777Y CN 2354777 Y CN2354777 Y CN 2354777Y CN 98249624 CN98249624 CN 98249624 CN 98249624 U CN98249624 U CN 98249624U CN 2354777 Y CN2354777 Y CN 2354777Y
- Authority
- CN
- China
- Prior art keywords
- groove
- substrate
- utility
- model
- pupils
- 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
Links
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model provides a drawing board which is used for pupils to do mathematical problems. The utility model is characterized in that a sliver-shaped base board is provided with a star-shaped groove, the lower part of the groove is provided with 1 to 5 horizontal grooves, and the groove and the horizontal grooves are penetrated through the base board. The utility model can be used for standardizing the formulas of four arithmetic operation and can make writing tidy.
Description
The utility model relates to a kind of chart board of pupil's doing mathematics topic usefulness.
Primary school one to the junior mathematics overwhelming majority be arithmetic and simple geometric figure.In performing the four operations and drawing,, cause the row formula of the arithmetic of working it out and the geometric figure of picture because the age is too little such as triangle, foursquare process, relatively hasty and careless, more painstaking during the teacher comment operation.
The purpose of this utility model just provides a kind of chart board for pupil's doing mathematics topic usefulness, and the row formula of its arithmetic of standard is write carefully and neatly it.
The purpose of this utility model can realize by following scheme, on the substrate of a strip, be provided with
The shape groove has 1-5 bar level trough below groove.Groove and level trough all penetrate substrate.
Because substrate is provided with
The shape groove, the pupil does in the division row formula process, can on homework book, draw by groove and eradicate number "
" and and the supporting use of level trough.Doing such as taking advantage of, add, during subtraction, only need utilizing level trough just can make its row formula carefully and neatly done.
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1, structural representation of the present utility model.
Substrate upper end at a strip is provided with one
Shape groove 1, below groove 1, be provided with 1-5 bar level trough 2. is provided with square, right angled triangle, circle and right-angled trapezium in the lower end of substrate frame groove, set groove, level trough and frame groove all penetrate substrate, are marked with scale at an edge of the substrate of strip.
Claims (3)
1, a kind of primary school mathematics chart board is characterized in that being provided with one in the substrate upper end of a strip
The groove of shape (1) and be located at the 1-5 bar level trough (2) of groove (1) below, groove (1) and level trough (2) all penetrate substrate.
2, primary school mathematics chart board according to claim 1 is characterized in that being provided with in the lower end of substrate the frame groove of square, right angled triangle, circle and right-angled trapezium, and the frame groove penetrates substrate.
3, primary school mathematics chart board according to claim 2 is characterized in that being marked with scale at an edge of substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98249624 CN2354777Y (en) | 1998-12-21 | 1998-12-21 | Mathematic teaching board for pupils |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98249624 CN2354777Y (en) | 1998-12-21 | 1998-12-21 | Mathematic teaching board for pupils |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2354777Y true CN2354777Y (en) | 1999-12-22 |
Family
ID=33994321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98249624 Expired - Fee Related CN2354777Y (en) | 1998-12-21 | 1998-12-21 | Mathematic teaching board for pupils |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2354777Y (en) |
-
1998
- 1998-12-21 CN CN 98249624 patent/CN2354777Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |