CN203950469U - A kind of trigonometric function demonstration teaching aid - Google Patents
A kind of trigonometric function demonstration teaching aid Download PDFInfo
- Publication number
- CN203950469U CN203950469U CN201420260578.6U CN201420260578U CN203950469U CN 203950469 U CN203950469 U CN 203950469U CN 201420260578 U CN201420260578 U CN 201420260578U CN 203950469 U CN203950469 U CN 203950469U
- Authority
- CN
- China
- Prior art keywords
- mobile jib
- pin shaft
- fixed pin
- trigonometric function
- secondary bar
- 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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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
A kind of trigonometric function demonstration teaching aid, comprise base plate, be arranged on mobile jib, fixed pin shaft on described base plate, by described fixed pin shaft, be fixed on the secondary bar on described mobile jib, described base plate is provided with display system, on described mobile jib and described secondary bar, be equipped with chute and telescoping mechanism, the side of described telescoping mechanism is provided with check nut, and the two ends of described mobile jib and described secondary bar are all connected with wire.The utility model is reasonable in design, simple in structure, lightweight easy to carry, by adjusting the position of fixed pin shaft in chute, realize the length of side and the angle of adjusting triangle shape, when the required fixed pin shaft institute that exceeds can be by regulating telescoping mechanism realize can range of adjustment time, adjustment process obtains leg-of-mutton length of side data by the resistance change between real-time measurement fixed pin shaft, thereby can obtain accurately the variation of each value, presentation process image is understandable, has deepened the degree of understanding of student to trigonometric function.
Description
Technical field
The utility model relates to teaching equipment field, relates in particular to a kind of trigonometric function demonstration teaching aid.
Background technology
Trigonometric function, as the content of middle school mathematics, accounts for ponderable position in elementary mathematics.Trigonometric function has related to a plurality of theorems, definition and formula, because some students can not well understand these theorems, definition and formula, because being difficult to memory and using and easily meet difficulty, caused all undesirable of teacher's teaching and students ' learning performance, and the enthusiasm of Students ' Learning is affected, give student and teacher even the head of a family brought certain difficulty.Current mathematics trigonometric function teaching aid, the problem that exist on the basis that purposes demonstration single, that use and carry equal inconvenience, teacher each limit of triangle when the computing of telling about trigonometric function still rests on blackboard drawing, wastes time and energy, the low demonstration weak effect of operating performance, student is the result of direct observation post demonstration fast.
Utility model content
The utility model, in order to overcome deficiency of the prior art, provides a kind of trigonometric function demonstration teaching aid.
The utility model is to be achieved through the following technical solutions:
A kind of trigonometric function demonstration teaching aid, comprise base plate, be arranged on mobile jib, fixed pin shaft on described base plate, by described fixed pin shaft, be fixed on the secondary bar on described mobile jib, described base plate is provided with display system, on described mobile jib and described secondary bar, be equipped with chute and telescoping mechanism, the side of described telescoping mechanism is provided with check nut, and the two ends of described mobile jib and described secondary bar are all connected with wire.
As optimal technical scheme of the present utility model, described mobile jib and described secondary bar are provided with wire automatic deploying and retracting mechanism.
As optimal technical scheme of the present utility model, in described display system, be provided with scm managing system.
As optimal technical scheme of the present utility model, described check nut is provided with reticulate pattern.
Compared with prior art, the beneficial effects of the utility model are: the utility model is reasonable in design, simple in structure, lightweight easy to carry, by adjusting the position of fixed pin shaft in chute, realize the length of side and the angle of adjusting triangle shape, when the required fixed pin shaft institute that exceeds can be by regulating telescoping mechanism realize can range of adjustment time, adjustment process obtains leg-of-mutton length of side data by the resistance change between real-time measurement fixed pin shaft, thereby can obtain accurately the variation of each value, presentation process image is understandable, deepened the degree of understanding of student to trigonometric function.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-mobile jib; 2-check nut; 3-fixed pin shaft; 4-base plate; 5-telescoping mechanism; 6-wire; 7-chute; 8-display system; The secondary bar of 9-.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, Fig. 1 is structural representation of the present utility model.
Described a kind of trigonometric function demonstration teaching aid, comprise base plate 4, be arranged on mobile jib 1, fixed pin shaft 3 on described base plate 4, by described fixed pin shaft 3, be fixed on the secondary bar 9 on described mobile jib 1, described base plate 4 is provided with display system 8, on described mobile jib 1 and described secondary bar 9, be equipped with chute 7 and telescoping mechanism 5, the side of described telescoping mechanism 5 is provided with check nut 2, and the two ends of described mobile jib 1 and described secondary bar 9 are all connected with wire 6.By adjusting the position of fixed pin shaft 3 in chute 7, realize the length of side and the angle of adjusting triangle shape, when required can be by regulating telescoping mechanism 5 realize while exceeding 3 energy range of adjustment of fixed pin shaft, the leg-of-mutton length of side that described mobile jib 1 and described secondary bar 9 form is by described fixed pin shaft 3, in described chute 7, to slide jointly to realize with the length adjustment of described telescoping mechanism 5, adjustment process obtains leg-of-mutton length of side data by the resistance change between real-time measurement fixed pin shaft 3, thereby can obtain accurately the variation of each value, presentation process image is understandable, deepened the degree of understanding of student to trigonometric function.
Described mobile jib 1 and described secondary bar 9 are provided with wire automatic deploying and retracting mechanism, can adapt to fast the variation of conductor length in adjustment process.
In described display system 8, be provided with scm managing system, according to measurement data, calculate requiredly, and controlling and show output.
Described check nut 2 is provided with reticulate pattern, plays non-slip operation and acts on easily.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. a trigonometric function demonstration teaching aid, comprise base plate (4), be arranged on mobile jib (1), fixed pin shaft (3) on described base plate (4), by described fixed pin shaft (3), be fixed on the secondary bar (9) on described mobile jib (1), it is characterized in that: described base plate (4) is provided with display system (8), on described mobile jib (1) and described secondary bar (9), be equipped with chute (7) and telescoping mechanism (5), the side of described telescoping mechanism (5) is provided with check nut (2), and the two ends of described mobile jib (1) and described secondary bar (9) are all connected with wire (6).
2. a kind of trigonometric function demonstration teaching aid according to claim 1, is characterized in that: described mobile jib (1) and described secondary bar (9) are provided with wire automatic deploying and retracting mechanism.
3. a kind of trigonometric function demonstration teaching aid according to claim 1, is characterized in that: described display system is provided with scm managing system in (8).
4. a kind of trigonometric function demonstration teaching aid according to claim 1, is characterized in that: described check nut (2) is provided with reticulate pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260578.6U CN203950469U (en) | 2014-05-21 | 2014-05-21 | A kind of trigonometric function demonstration teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260578.6U CN203950469U (en) | 2014-05-21 | 2014-05-21 | A kind of trigonometric function demonstration teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203950469U true CN203950469U (en) | 2014-11-19 |
Family
ID=51892494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420260578.6U Expired - Fee Related CN203950469U (en) | 2014-05-21 | 2014-05-21 | A kind of trigonometric function demonstration teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203950469U (en) |
-
2014
- 2014-05-21 CN CN201420260578.6U patent/CN203950469U/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: 20141119 Termination date: 20150521 |
|
| EXPY | Termination of patent right or utility model |