CN202996129U - Math limit teaching aid - Google Patents
Math limit teaching aid Download PDFInfo
- Publication number
- CN202996129U CN202996129U CN 201320007912 CN201320007912U CN202996129U CN 202996129 U CN202996129 U CN 202996129U CN 201320007912 CN201320007912 CN 201320007912 CN 201320007912 U CN201320007912 U CN 201320007912U CN 202996129 U CN202996129 U CN 202996129U
- Authority
- CN
- China
- Prior art keywords
- limit
- teaching aid
- math
- waffle slab
- grid 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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- Bakery Products And Manufacturing Methods Therefor (AREA)
Abstract
The utility model discloses a math limit teaching aid comprising a grid plate, wherein an upper side of the grid plate is provided with a spring adjusting device connected with a black board, an upper end of the spring adjusting device is provided with a hook, a bottom face of the grid plate s connected with a magnetic sheet, the grid plate is connected with small balls, grid cross point parts at the middle part of the grid plate is provided with a row of small holes, and a coordinate and straight ruler are hinged to the grid plate. The beneficial effects of the math limit teaching aid are that the math limit teaching aid is good in utilization effects, students are enabled to quickly learn and master the abstract limit concept, the math limit teaching aid is simple in manufacture and low in manufacture cost, a teacher can personally make the math limit teaching aid by hand and then use the math limit teaching aid, and different limit problems can be explained by changing the positions and the number of the small balls when math limit problems are explained.
Description
Technical field
The utility model relates to teaching technique with the apparatus field, relates in particular to a kind of mathematics limit teaching aid.
Background technology
The teacher is saying College Maths class hour now, can use without any teaching aid, be merely able to explain with word and language on blackboard, the concept of the limit is unusual abstract concept, and be the basis of College Maths, be difficult to make the student to understand fast with the explanation of this kind method.
Summary of the invention
The purpose of this utility model is overcome the deficiencies in the prior art and a kind of mathematics limit teaching aid that can make student's fast understanding is provided.
For reaching above purpose, the utility model adopts following technical scheme: mathematics limit teaching aid, comprise waffle slab, the upside of waffle slab has the spring-loaded governor that is connected with blackboard, described spring-loaded governor upper end has hook, described waffle slab bottom surface connection magnetic sheet, and described waffle slab connects bead, with delegation's aperture, coordinate and ruler are hinged on waffle slab by drawing pin described waffle slab at the grid intersection place in centre position.
Described ruler is comprised of wide chi and narrow rule, and described wide chi edge is provided with chute, and the narrow rule edge is placed in the chute of wide chi.
The abscissa axis of described coordinate and axis of ordinates are all the length adjustable structure, and concrete structure is, each coordinate axis is comprised of broadside and narrow limit, and described broadside edge is provided with chute, and edge, narrow limit is placed in the chute of broadside.
The beneficial effects of the utility model are: the utility model result of use is good, can make student's concept of the abstract limit of association fast, and can grasp fast; Manufacturing is simple, cost is low, and the teacher can make use personally, can explain different Limits properties by position and the quantity of conversion bead when explanation mathematics Limits properties.
Description of drawings
In order to be illustrated more clearly in the technical solution of the utility model, during the below will describe embodiment, the accompanying drawing of required use is done to introduce simply, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is structural drawing of the present utility model.
Embodiment
below in conjunction with accompanying drawing, the technical solution of the utility model is explained in detail, in conjunction with Fig. 1, mathematics limit teaching aid, comprise waffle slab 1, the upside of waffle slab has the spring-loaded governor 2 that is connected with blackboard, described spring-loaded governor upper end has hook, described waffle slab bottom surface connects magnetic sheet, described waffle slab connects bead 6, described waffle slab at the grid intersection place in centre position with delegation's aperture 3, coordinate 4 and ruler 7 are hinged on waffle slab by drawing pin 5, can explain different Limits properties by position and the quantity of conversion bead when explanation mathematics Limits properties, can also draw straight line at any angle by ruler 7.
Described ruler is comprised of wide chi and narrow rule, and described wide chi edge is provided with chute, and the narrow rule edge is placed in the chute of wide chi.The abscissa axis of described coordinate and axis of ordinates are all the length adjustable structure, and concrete structure is, each coordinate axis is comprised of broadside and narrow limit, and described broadside edge is provided with chute, and edge, narrow limit is placed in the chute of broadside.The ruler of adjustable-length and the coordinate of adjustable-length can be tackled the mathematical problem of varying number.
The above person, being only preferred embodiment of the present utility model, is not to limit practical range of the present utility model, and namely all equalizations of doing according to the utility model change and modify, be all the utility model claim scope and contain, give an example no longer one by one here.
Claims (3)
1. mathematics limit teaching aid, comprise waffle slab, the upside of waffle slab has the spring-loaded governor that is connected with blackboard, described spring-loaded governor upper end has hook, described waffle slab bottom surface connects magnetic sheet, described waffle slab connects bead, it is characterized in that: with delegation's aperture, coordinate and ruler are hinged on waffle slab by drawing pin described waffle slab at the grid intersection place in centre position.
2. mathematics limit teaching aid according to claim 1, it is characterized in that: described ruler is comprised of wide chi and narrow rule, and described wide chi edge is provided with chute, and the narrow rule edge is placed in the chute of wide chi.
3. mathematics limit teaching aid according to claim 1, it is characterized in that: the abscissa axis of described coordinate and axis of ordinates are all the length adjustable structure, concrete structure is, each coordinate axis is comprised of broadside and narrow limit, described broadside edge is provided with chute, and edge, narrow limit is placed in the chute of broadside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320007912 CN202996129U (en) | 2013-01-08 | 2013-01-08 | Math limit teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320007912 CN202996129U (en) | 2013-01-08 | 2013-01-08 | Math limit teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202996129U true CN202996129U (en) | 2013-06-12 |
Family
ID=48567276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320007912 Expired - Fee Related CN202996129U (en) | 2013-01-08 | 2013-01-08 | Math limit teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202996129U (en) |
-
2013
- 2013-01-08 CN CN 201320007912 patent/CN202996129U/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: 20130612 Termination date: 20140108 |