CN204749650U - Mathematical teaching aid - Google Patents
Mathematical teaching aid Download PDFInfo
- Publication number
- CN204749650U CN204749650U CN201520530066.1U CN201520530066U CN204749650U CN 204749650 U CN204749650 U CN 204749650U CN 201520530066 U CN201520530066 U CN 201520530066U CN 204749650 U CN204749650 U CN 204749650U
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- CN
- China
- Prior art keywords
- teaching aid
- utility
- model
- expansion link
- hold
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- Expired - Fee Related
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Abstract
The utility model discloses a mathematical teaching aid, including magnetism fixing base (1), adsorb on magnet board (16) magnetism fixing base (1), magnetism fixing base (1) is connected with circular joint (4) through head rod (2), the middle part of head rod (2) is fixed with circular scale (3), block in first connecting block (5) circular connector (4), first connecting block (5) are connected with second connecting block (8) through second connecting rod (6), second connecting block (8) are fixed in on sleeve (10) through a set screw (9), be provided with pointer (7) on second connecting rod (6). The utility model discloses convenient to use, flexibility.
Description
Technical field
The utility model belongs to art of mathematics, particularly a kind of mathematics teaching aid.
Background technology
Class hour in instructors, in order to the content of course can be told about more intuitively, all use some teaching aids, when especially carrying out several teaching or mathematical education, usually ruler will be used, set square and compasses, and at present, these teaching aids are independently individual, the different graphic needing teacher to draw as required during use takes different teaching aids repeatedly, such as when drawing specific angle, teacher needs the one side first drawing angle with ruler usually, the angle that utilization hornwork measures needs afterwards makes a mark, recycle ruler afterwards and complete mapping, complex steps, operation inconvenience, existing drawing tool does not possess measurement function simultaneously, can not the angle of measurement pattern, existing teaching aid uses extremely inconvenience in a word.
Utility model content
For the defect of prior art, the utility model provides a kind of mathematics teaching aid.
A kind of mathematics teaching aid, comprise magnetic holder 1, described magnetic holder 1 is adsorbed on magnet board 16, described magnetic holder 1 is connected with circular joint 4 by head rod 2, the middle part of described head rod 2 is fixed with circular scale 3, described circular connector 4 is stuck in the first contiguous block 5, described first contiguous block 5 is connected with the second contiguous block 8 by the second connecting rod 6, described second contiguous block 8 is fixed on sleeve 10 by the first hold-down screw 9, described second connecting rod 6 is provided with pointer 7, described pointer 7 points to described circular scale 3, expansion link 11 is socketed with in described sleeve 10, described sleeve 10 is provided with the second hold-down screw 12, described expansion link 11 is fixed by screwing described second hold-down screw 12, the end of described expansion link 11 fixes chalk holder 14 by the 3rd hold-down screw 13, by described chalk holder clamping chalk 15.
Optionally, described expansion link 11 is also provided with rule 17.
The beneficial effects of the utility model are: use this teaching aid can the angle of measurement plane figure easily, can also draw required angle easily, for mathematical education provides conveniently.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model mathematics teaching aid;
Fig. 2 is the utility model mathematics teaching aid using state figure.
Detailed description of the invention
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, are described in detail detailed description of the invention of the present utility model below in conjunction with accompanying drawing, make above-mentioned and other object of the present utility model, Characteristics and advantages will be more clear.Reference numeral identical in whole accompanying drawing indicates identical part.Deliberately do not draw accompanying drawing in proportion, focus on purport of the present utility model is shown.
As shown in Figure 1, mathematics teaching aid of the present utility model comprises magnetic holder 1, described magnetic holder 1 is adsorbed on magnet board 16, described magnetic holder 1 is connected with circular joint 4 by head rod 2, the middle part of described head rod 2 is fixed with circular scale 3, described circular connector 4 is stuck in the first contiguous block 5, described first contiguous block 5 is connected with the second contiguous block 8 by the second connecting rod 6, described second contiguous block 8 is fixed on sleeve 10 by the first hold-down screw 9, described second connecting rod 6 is provided with pointer 7, described pointer 7 points to described circular scale 3, expansion link 11 is socketed with in described sleeve 10, described expansion link 11 can be stretched out by sleeve 10, sleeve 10 is provided with the second hold-down screw 12, described second hold-down screw 12 is through the outer wall of sleeve 10, expansion link 11 can be fixed by screwing the second hold-down screw 12, the end of described expansion link 11 fixes chalk holder 14 by the 3rd hold-down screw 13, by described chalk holder clamping chalk 15, described expansion link 11 can also be provided with rule 17.
Refer to Fig. 2, in order to draw the angle of needs, first the length of expansion link 11 is adjusted, can adjust by reference mark chi 17, adjust to after needing length, make teaching aid with circular connector 4 for the center of circle rotates, draw one section of camber line, afterwards pointer 7 is pointed to 0 degree of position of dial 3, now a is counted in chalk 15 present position, rotate teaching aid, the position making pointer 7 point to dial 3 angle to be, now b is counted in chalk 15 present position, then a, angle between b 2 and the center of circle (joint 4 position) is just, so just, the angle of needs can be drawn easily.Similar can also utilize it to take measurement of an angle, also for Fig. 2, such as want the angle of measured angular aob, wherein o is the summit at this angle, magnetic holder 1 can be fixed on o place, summit, make 0 position of dial and ao limit to it, rotate teaching aid, pointer 7 is alignd with ob limit, and now the reading of pointer 7 on dial 3 is the angle at this angle.The circle of different radii can also be drawn by adjustment expansion link 11 teaching aid of the present utility model.
Set forth a lot of detail in the above description so that fully understand the utility model.But above description is only preferred embodiment of the present utility model, the utility model can be much different from alternate manner described here to implement, and therefore the utility model is not by the disclosed concrete restriction implemented above.Any those skilled in the art are not departing under technical solutions of the utility model ambit simultaneously, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solutions of the utility model, or be revised as the Equivalent embodiments of equivalent variations.Every content not departing from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solutions of the utility model protection.
Claims (2)
1. a mathematics teaching aid, it is characterized in that, comprise magnetic holder (1), described magnetic holder (1) is adsorbed on magnet board (16), described magnetic holder (1) is connected with circular joint (4) by head rod (2), the middle part of described head rod (2) is fixed with circular scale (3), described circular connector (4) is stuck in the first contiguous block (5), described first contiguous block (5) is connected with the second contiguous block (8) by the second connecting rod (6), described second contiguous block (8) is fixed on sleeve (10) by the first hold-down screw (9), described second connecting rod (6) is provided with pointer (7), described pointer (7) points to described circular scale (3), expansion link (11) is socketed with in described sleeve (10), described sleeve (10) is provided with the second hold-down screw (12), by screwing the fixing described expansion link (11) of described second hold-down screw (12), the end of described expansion link (11) is by the fixing chalk holder (14) of the 3rd hold-down screw (13), by described chalk holder clamping chalk (15).
2. mathematics teaching aid according to claim 1, is characterized in that, described expansion link (11) is also provided with rule (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520530066.1U CN204749650U (en) | 2015-07-21 | 2015-07-21 | Mathematical teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520530066.1U CN204749650U (en) | 2015-07-21 | 2015-07-21 | Mathematical teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204749650U true CN204749650U (en) | 2015-11-11 |
Family
ID=54464399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520530066.1U Expired - Fee Related CN204749650U (en) | 2015-07-21 | 2015-07-21 | Mathematical teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204749650U (en) |
-
2015
- 2015-07-21 CN CN201520530066.1U patent/CN204749650U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 Termination date: 20160721 |