CN203733363U - Mathematics teaching aid for four arithmetic operations - Google Patents
Mathematics teaching aid for four arithmetic operations Download PDFInfo
- Publication number
- CN203733363U CN203733363U CN201420071147.5U CN201420071147U CN203733363U CN 203733363 U CN203733363 U CN 203733363U CN 201420071147 U CN201420071147 U CN 201420071147U CN 203733363 U CN203733363 U CN 203733363U
- Authority
- CN
- China
- Prior art keywords
- teaching aid
- rolling disc
- rectangular
- rotating disc
- adjusting gear
- 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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- Electrically Operated Instructional Devices (AREA)
Abstract
The utility model relates to a mathematics teaching aid for four arithmetic operations. The teaching aid comprises a plurality of groups of adjusting devices sequentially in end-to-end connection; each adjusting device group comprises a rotating disc and a rectangular shell; surfaces at two ends of the rotating disc are provided with rectangular jack grooves fit with the cross section of the rectangular shell; the center of the rotating disc is provided with a rotating shaft pin; the side face of the rotating disc is divided into seven sections with the central axis of the rotating shaft pin as the center; stickers for marking "+" "-" "*" "/" "=" "(" and ")" are arranged respectively inside the seven regions; and the four side faces of the rectangular shell are provided with writing whiteboards. According to the mathematics teaching aid for four arithmetic operations, the structure is simple; and an insertion connection mode is adopted, numbers can be written on the side faces of the rectangular shell, operation symbols can be adjusted via the rotating disc, operation of different bits can be achieved, interest is strong, question setting and exchange among students is facilitated, the atmosphere of the classroom is activated, and the teaching effects are improved.
Description
Technical field
The utility model relates to a kind of mathematics arithmetic teaching aid.
Background technology
In known technical field, in the mathematics classroom of school, arithmetic be after the basis of learning mathematics knowledge, the basis of various computings all needs to be converted into arithmetic, so its skill level is closely related with mathematical ability, the general mode of directly setting a question with chalk on blackboard that adopts of existing mathematical education is explained and imparts knowledge to students, interactive not good with interest.
Utility model content
The technical problems to be solved in the utility model is: overcome the problems referred to above, a kind of interactive and interesting mathematics arithmetic teaching aid of getting well and can enliven classroom atmosphere is provided.
The utility model solves the technical scheme that its technical matters adopts: a kind of mathematics arithmetic teaching aid, there is some groups of head and the tail connected adjusting gear successively, every group of adjusting gear all has a rolling disc and a rectangular case, be equipped with the rectangular receptacle groove adapting with the xsect size of rectangular case at two end surfaces of described rolling disc, one end of rectangular case in every group of adjusting gear is inserted in the rectangular receptacle groove on the wherein end face of the rolling disc in this group, and the other end of rolling disc in every group of adjusting gear is for inserting the end of rectangular case of next group adjusting gear, center at described rolling disc is provided with rotating shaft pin, the side of rolling disc is divided into seven regions centered by the central axis of described rotating shaft pin, and in seven regions, be respectively equipped with for indicating "+", "-", "×", " ÷ ", "=", " (", ") " paster, four sides of described rectangular case are equipped with white board for writing.
Further, as a kind of concrete embodiment, the teaching aid of computing described in the utility model has three groups of adjusting gears.
The beneficial effects of the utility model are: the utility model is simple in structure, adopt the mode of inserting splicing, numeral can be write out in side in rectangular case, by the symbol of rolling disc capable of regulating computing, to reach the not computing of isotopic number, interesting strong, can facilitate the interchange of mutually setting a question between student, enliven classroom atmosphere, improve the effect of teaching.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of rolling disc in the utility model;
In figure: 1. adjusting gear, 11. rolling discs, 12. rectangular case, 13. rectangular receptacle grooves, 14. rotating shaft pins, 15. white board for writings.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, and basic structure of the present utility model is only described in a schematic way, and therefore it only shows the formation relevant with the utility model.
The preferred embodiment of the utility model mathematics arithmetic teaching aid as depicted in figs. 1 and 2, there is three groups of head and the tail connected adjusting gear 1 successively, every group of adjusting gear 1 all has a rolling disc 11 and a rectangular case 12, be equipped with the rectangular receptacle groove 13 adapting with the xsect size of rectangular case 12 at two end surfaces of described rolling disc 11, one end of rectangular case 12 in every group of adjusting gear 1 is inserted in the rectangular receptacle groove 13 on the wherein end face of the rolling disc 11 in this group, and the other end of rolling disc 11 in every group of adjusting gear 1 is for inserting the end of rectangular case 12 of next group adjusting gear 1, be provided with rotating shaft pin 14 at described rolling disc 11 center, the side of rolling disc 11 is divided into seven regions centered by the central axis of described rotating shaft pin 14, and in seven regions, be respectively equipped with for indicating "+", "-", "×", " ÷ ", "=", " (", ") " paster, four sides of described rectangular case 12 are equipped with white board for writing 15.
The utility model is simple in structure, adopt the mode of inserting splicing, numeral can be write out in side in rectangular case, by the symbol of rolling disc capable of regulating computing, to reach the not computing of isotopic number, interesting strong, can facilitate the interchange of mutually setting a question between student, enliven classroom atmosphere, improve the effect of teaching.
Taking above-mentioned foundation desirable embodiment of the present utility model as enlightenment, by above-mentioned description, relevant staff can, not departing from the scope of this utility model technological thought, carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on instructions, must determine its technical scope according to claim scope.
Claims (2)
1. a mathematics arithmetic teaching aid, it is characterized in that: there is some groups of head and the tail connected adjusting gear (1) successively, every group of adjusting gear (1) all has a rolling disc (11) and a rectangular case (12), be equipped with the rectangular receptacle groove (13) adapting with the xsect size of rectangular case (12) at two end surfaces of described rolling disc (11), one end of rectangular case (12) in every group of adjusting gear (1) is inserted in the rectangular receptacle groove (13) on the wherein end face of the rolling disc (11) in this group, and the other end of rolling disc (11) in every group of adjusting gear (1) is used for the end of the rectangular case (12) of inserting next group adjusting gear (1), be provided with rotating shaft pin (14) at the center of described rolling disc (11), centered by the central axis of described rotating shaft pin (14), the side of rolling disc (11) is divided into seven regions, and in seven regions, be respectively equipped with for indicating "+", "-", "×", " ÷ ", "=", " (", ") " paster, four sides of described rectangular case (12) are equipped with white board for writing (15).
2. mathematics arithmetic teaching aid as claimed in claim 1, is characterized in that: described computing teaching aid has three groups of adjusting gears (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420071147.5U CN203733363U (en) | 2014-02-19 | 2014-02-19 | Mathematics teaching aid for four arithmetic operations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420071147.5U CN203733363U (en) | 2014-02-19 | 2014-02-19 | Mathematics teaching aid for four arithmetic operations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203733363U true CN203733363U (en) | 2014-07-23 |
Family
ID=51203416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420071147.5U Expired - Fee Related CN203733363U (en) | 2014-02-19 | 2014-02-19 | Mathematics teaching aid for four arithmetic operations |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203733363U (en) |
-
2014
- 2014-02-19 CN CN201420071147.5U patent/CN203733363U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20150219 |
|
| EXPY | Termination of patent right or utility model |