CN204423720U - Primary school mathematics adds, subtraction practice board - Google Patents
Primary school mathematics adds, subtraction practice board Download PDFInfo
- Publication number
- CN204423720U CN204423720U CN201520117547.XU CN201520117547U CN204423720U CN 204423720 U CN204423720 U CN 204423720U CN 201520117547 U CN201520117547 U CN 201520117547U CN 204423720 U CN204423720 U CN 204423720U
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- China
- Prior art keywords
- bar shaped
- sign
- base plate
- window
- plate
- 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
Primary school mathematics adds, subtraction practice board, two windows are provided with in the position that the centre of base plate is top, "+﹣ " sign of operation is provided with between window, said "+﹣ " sign of operation above and be respectively arranged with slidably overhead gage and lower baffle plate below, be used for blocking "+﹣ " sign of operation respectively; Be respectively arranged with draw-in groove in the both sides of the rear window of said base plate, in draw-in groove, be provided with bar shaped plate, the front of bar shaped plate, namely the face that window is seen is provided with numeral, the reverse side of bar shaped plate is provided with pushing board.The utility model structure is simple, easy to use, during use, if need student to calculate addition, then rotates lower baffle plate and is hidden by minus sign, then holds two bar shaped plates about the upper and lower push-and-pull of pushing board, the plus and minus calculation of the numeral that cooperatively interacts.This exercise version is more direct, novel, makes student more be added with computing interest.
Description
Technical field
The utility model belongs to math teaching tool for primary school, particularly primary school mathematics add, subtraction practice board.
Background technology
In primary school math teaching, especially during primary grades, the computing of main exercise plus-minus method, time in the first year, teacher expertly can grasp signed magnitude arithmetic(al) within 20 to allow student, allows student be in often and makes multiple card, with different signed magnitude arithmetic(al) formulas on each card, then upset to practise, more being not easy of card is carried or is preserved, and student is also more irritated when practising.
Utility model content
The utility model overcomes the weak point of the problems referred to above, provides that a kind of primary school mathematics adds, subtraction practice board.
This practice board is achieved in that and the position that the centre of base plate is top is provided with two windows, "+﹣ " sign of operation is provided with between window, said "+﹣ " sign of operation above and be respectively arranged with slidably overhead gage and lower baffle plate below, be used for blocking "+﹣ " sign of operation respectively; Be respectively arranged with draw-in groove in the both sides of the rear window of said base plate, in draw-in groove, be provided with bar shaped plate, the front of bar shaped plate, namely the face that window is seen is provided with numeral, the reverse side of bar shaped plate is provided with pushing board.
Further, the back side of said base plate is provided with the stiffener be connected.
Further, the bottom of said base plate is provided with deck.
The utility model structure is simple, easy to use, during use, if need student to calculate addition, then rotates lower baffle plate and is hidden by minus sign, then holds two bar shaped plates about the upper and lower push-and-pull of pushing board, the plus and minus calculation of the numeral that cooperatively interacts.This exercise version is more direct, novel, makes student more be added with computing interest.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model, and accompanying drawing 2 is structure schematic diagram of the present utility model;
In figure, 1-bar shaped plate, 2-base plate, 3-overhead gage, 4-window, 5-lower baffle plate, 6-deck, 7-draw-in groove, 8-pushing board, 9-stiffener.
Embodiment
Illustrate below in conjunction with accompanying drawing and with embodiment, the utility model to be described in further detail:
Primary school mathematics as depicted in figs. 1 and 2 adds, subtraction practice board, be made up of base plate 2 and bar shaped plate 1, two windows 4 are provided with in the position that the centre of base plate 2 is top, "+﹣ " sign of operation is provided with between window 4, said "+﹣ " sign of operation above and be respectively arranged with slidably overhead gage 3 and lower baffle plate 5 below, be used for blocking "+﹣ " sign of operation respectively; Be respectively arranged with draw-in groove 7 in the both sides of the rear window 4 of said base plate 2, be provided with bar shaped plate 1 in draw-in groove 7, the front of bar shaped plate 1, the face namely seen from window 4 is provided with numeral, the reverse side of bar shaped plate 1 is provided with pushing board 8.
Further, the back side of said base plate 2 is provided with the stiffener 9 be connected.
Further, the bottom of said base plate 2 is provided with deck 6.
The utility model structure is simple, easy to use, during use, if need student to calculate addition, then rotates lower baffle plate and is hidden by minus sign, then holds two bar shaped plates about the upper and lower push-and-pull of pushing board, the plus and minus calculation of the numeral that cooperatively interacts.This exercise version is more direct, novel, makes student more be added with computing interest.
Claims (3)
1. primary school mathematics add, subtraction practice board, be made up of base plate (2) and bar shaped plate (1), it is characterized in that: be provided with two windows (4) in the position that the centre of base plate (2) is top, window is provided with "+﹣ " sign of operation between (4), said "+﹣ " sign of operation above and be respectively arranged with slidably overhead gage (3) and lower baffle plate (5) below, be used for blocking "+﹣ " sign of operation respectively; Draw-in groove (7) is respectively arranged with in the both sides of the rear window (4) of said base plate (2), bar shaped plate (1) is provided with in draw-in groove (7), the front of bar shaped plate (1), the face namely seen from window (4) is provided with numeral, the reverse side of bar shaped plate (1) is provided with pushing board (8).
2. primary school mathematics according to claim 1 add, subtraction practice board, it is characterized in that: the back side of base plate (2) is provided with the stiffener (9) be connected.
3. primary school mathematics according to claim 1 add, subtraction practice board, it is characterized in that: the bottom of base plate (2) is provided with deck (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520117547.XU CN204423720U (en) | 2015-02-27 | 2015-02-27 | Primary school mathematics adds, subtraction practice board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520117547.XU CN204423720U (en) | 2015-02-27 | 2015-02-27 | Primary school mathematics adds, subtraction practice board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204423720U true CN204423720U (en) | 2015-06-24 |
Family
ID=53474070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520117547.XU Expired - Fee Related CN204423720U (en) | 2015-02-27 | 2015-02-27 | Primary school mathematics adds, subtraction practice board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204423720U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107564371A (en) * | 2016-03-08 | 2018-01-09 | 刘乐凝 | One kind plus-minus learning device |
| CN108986597A (en) * | 2018-07-13 | 2018-12-11 | 李志鑫 | A kind of mathematical education addition and subtraction answering device |
-
2015
- 2015-02-27 CN CN201520117547.XU patent/CN204423720U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107564371A (en) * | 2016-03-08 | 2018-01-09 | 刘乐凝 | One kind plus-minus learning device |
| CN108986597A (en) * | 2018-07-13 | 2018-12-11 | 李志鑫 | A kind of mathematical education addition and subtraction answering device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20160227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |