CN206594900U - A kind of trigonometric function teaching aid - Google Patents
A kind of trigonometric function teaching aid Download PDFInfo
- Publication number
- CN206594900U CN206594900U CN201720212469.0U CN201720212469U CN206594900U CN 206594900 U CN206594900 U CN 206594900U CN 201720212469 U CN201720212469 U CN 201720212469U CN 206594900 U CN206594900 U CN 206594900U
- Authority
- CN
- China
- Prior art keywords
- trigonometric function
- base
- cross bar
- teaching aid
- bull stick
- 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
Links
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a kind of trigonometric function teaching aid, including base, the base is provided with iron plate, the iron plate is provided with cross bar, hinge connection has bull stick above the center of the cross bar, and the cross bar is with being equipped with scale, the base and being provided with above cross bar center protractor on bull stick, the bull stick other end lower surface is provided with the magnet matched with iron plate, and the base is provided with measuring scale.The beneficial effects of the utility model are, simple in construction, can demonstrate the concept of trigonometric function, are easy to calculate trigonometric function value, it is easy to student's Understanding memory formula, the length on triangle one side can be measured again, it is wide using scope, the teaching of teacher is facilitated, it is simple to operate, it is practical.
Description
Technical field
The utility model is related to teaching aid technical field, particularly a kind of trigonometric function teaching aid.
Background technology
Trigonometric function is angle correspondence random angle end edge and unit for independent variable with angle (mathematically the most frequently used Circular measure)
Circle intersecting point coordinate or the function that its ratio is dependent variable.At present, the mathematics class in middle school is when learning trigonometric function, typically teacher
Draw or write formula on blackboard to coordinate teaching, the teaching aid drawn and used when measuring is exactly protractor and ruler, is not had
There is special teaching aid.So draw time-consuming, it is arduously, not vivid, it is also not directly perceived, make not readily understood this mathematics of trigonometric function of student
Concept.When especially needing survey calculation multi-group data, just less facilitate.
A kind of trigonometric function study teaching aid, including semicircular amount are for example disclosed in prior art CN202771686U
Angle device, on the straight flange and arc-shaped side of protractor and middle part is designed with scale, it is characterised in that：Lead on the center of circle of protractor
Cross bearing pin and fix upper rack posts, in chute of the middle part of pole provided with axial direction, bolt is provided with chute, pointer is provided with bolt
And cord, upper plummet is fixed in the lower end of cord.
Although above-mentioned prior art intuitively demonstrates the concept of trigonometric function, only it is only limited to seek trigonometric function
Use, when knowing two sides and an angle, the length of another side can not be measured, the scope of application has certain limitation
Property.
Utility model content
The purpose of this utility model is to solve the above problems, devise a kind of trigonometric function teaching aid.
Realize that above-mentioned purpose the technical solution of the utility model is, a kind of trigonometric function teaching aid, including base, the base
Be provided with iron plate, the iron plate, which is provided with hinge connection above cross bar, the center of the cross bar, a bull stick, the cross bar with
It is equipped with scale, the base and is provided with above cross bar center under protractor, the bull stick other end on bull stick
Surface is provided with the magnet matched with iron plate, and the base is provided with measuring scale.
The base right lateral surface is provided with standing groove, and the measuring scale is put in standing groove.
Hinge connection has buckle closure at the standing groove.
The rotating shaft of the bull stick is overlapped with the center of circle of protractor.
The cross section of the base is rectangle.
The base front side surface is provided with one group of supporting leg.
The trigonometric function teaching aid made using the technical solution of the utility model, the trigonometric function teaching aid is simple in construction, both
The concept of trigonometric function can be demonstrated, is easy to calculate trigonometric function value, it is easy to student's Understanding memory formula, triangle can be measured again
The length on one side, it is wide using scope, the teaching of teacher is facilitated, it is simple to operate, it is practical.
Brief description of the drawings
Fig. 1 is the structural representation of trigonometric function teaching aid described in the utility model；
Fig. 2 is the partial enlarged drawing of trigonometric function teaching aid described in the utility model；
Fig. 3 is the right view of trigonometric function teaching aid described in the utility model；
In figure, 1, base；2nd, iron plate；3rd, cross bar；4th, bull stick；5th, scale；6th, protractor；7th, magnet；8th, measuring scale；9、
Standing groove；10th, buckle closure；11st, supporting leg.
Embodiment
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", the side of the instruction such as " preceding "
Position or position relationship are that, based on orientation shown in the drawings or position relationship, or the utility model product is usually put when using
Orientation or position relationship, be for only for ease of description the utility model and simplify and describe, rather than indicate or imply signified
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that new to this practicality
The limitation of type.
In description of the present utility model, in addition it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set
Have ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in utility model.
The utility model is specifically described below in conjunction with the accompanying drawings, as Figure 1-3, a kind of trigonometric function teaching aid, bag
Base 1 is included, the base 1 is provided with iron plate 2, and the iron plate 2 is provided with iron square hinge on cross bar 3, the center of the cross bar 3
Bull stick 4 is connected with, the cross bar 3 on bull stick 4 with being equipped with scale 5, the base 1 and above the center of cross bar 3
Provided with protractor 6, the other end lower surface of bull stick 4 is provided with the magnet 7 matched with iron plate 2, and the base 1 is provided with survey
Gage 8；The right lateral surface of base 1 is provided with standing groove 9, and the measuring scale 8 is put in standing groove 9；Hinge at the standing groove 9
It is connected with buckle closure 10；The rotating shaft of the bull stick 4 is overlapped with the center of circle of protractor 6；The cross section of the base 1 is rectangle；It is described
The front side surface of base 1 is provided with one group of supporting leg 11.
The characteristics of the present embodiment is that base 1 is provided with iron plate 2, and iron plate 2 is provided with cross bar 3, the center of cross bar 3
Top hinge connection has bull stick 4, and cross bar 3 on bull stick 4 with being equipped with scale 5, base 1 and above the center of cross bar 3
Provided with protractor 6, the other end lower surface of bull stick 4 is provided with the magnet 7 matched with iron plate 2, and base 1 is provided with measuring scale 8, energy
The concept of trigonometric function is demonstrated, is easy to calculate trigonometric function value, it is easy to student's Understanding memory formula, triangle one can be measured again
The length on side, it is wide using scope, the teaching of teacher is facilitated, it is simple to operate, it is practical.
In the present embodiment, when for impart knowledge to students in use, using one group of supporting leg 11 on the side surface of base 1 by this three
Angle function teaching aid is vertically placed on lectern.When known both sides and one angle ask three sides, bull stick 4 is rotated first, according to
Protractor 6 causes the angle of bull stick 4 and cross bar 3 to be changed into known angle, and because base 1 is provided with one layer of iron plate 2, and bull stick 4 is another
One end lower surface is provided with the magnet 7 matched with iron plate 2, therefore bull stick 4 can be fixed on into institute by iron plate 2 and magnet 7
Need at position, and because cross bar 3 on bull stick 4 with being equipped with scale 5, therefore just can be measured easily using the measuring scale 8 in standing groove 9
Go out the length on the 3rd side, it is simple and practical；When demonstrating the concept of trigonometric function, bull stick 4 is rotated to and cross bar using protractor 6
3 at required angle, and cross bar 3 can directly read the length of two adjacent edges with having scale 5 on bull stick 4, while can also profit
The length of opposite side is known with measuring scale 8, therefore just can be by calculating arbitrary trigonometric function value.
Above-mentioned technical proposal only embodies the optimal technical scheme of technical solutions of the utility model, the technology of the art
Some variations that personnel may make to some of which part embody principle of the present utility model, belong to the utility model
Protection domain within.
Claims (6)
1. a kind of trigonometric function teaching aid, including base (1), it is characterised in that the base (1) is provided with iron plate (2), the iron
Plate (2), which is provided with hinge connection above cross bar (3), the center of the cross bar (3), bull stick (4), and the cross bar (3) is with turning
It is equipped with bar (4) on scale (5), the base (1) and protractor (6) is provided with above cross bar (3) center, it is described
Bull stick (4) other end lower surface is provided with the magnet (7) matched with iron plate (2), and the base (1) is provided with measuring scale (8).
2. a kind of trigonometric function teaching aid according to claim 1, it is characterised in that base (1) right lateral surface is provided with
Standing groove (9), the measuring scale (8) is put in standing groove (9).
3. a kind of trigonometric function teaching aid according to claim 2, it is characterised in that standing groove (9) place's hinge connection
There is buckle closure (10).
4. a kind of trigonometric function teaching aid according to claim 1, it is characterised in that the rotating shaft of the bull stick (4) and angulation
The center of circle of device (6) is overlapped.
5. a kind of trigonometric function teaching aid according to claim 1, it is characterised in that the cross section of the base (1) is square
Shape.
6. a kind of trigonometric function teaching aid according to claim 1, it is characterised in that set on base (1) front side surface
There is one group of supporting leg (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720212469.0U CN206594900U (en) | 2017-03-06 | 2017-03-06 | A kind of trigonometric function teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720212469.0U CN206594900U (en) | 2017-03-06 | 2017-03-06 | A kind of trigonometric function teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206594900U true CN206594900U (en) | 2017-10-27 |
Family
ID=60127131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720212469.0U Expired - Fee Related CN206594900U (en) | 2017-03-06 | 2017-03-06 | A kind of trigonometric function teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206594900U (en) |
-
2017
- 2017-03-06 CN CN201720212469.0U patent/CN206594900U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201322616Y (en) | Measuring instrument | |
| CN201320906Y (en) | Multipurpose combined teaching aid | |
| CN204142246U (en) | A kind of guiding ruler gradient measurer | |
| CN206594900U (en) | A kind of trigonometric function teaching aid | |
| CN201444362U (en) | Multifunctional combined set square | |
| CN201600808U (en) | Multifunctional triangular demonstration instrument | |
| CN207241246U (en) | A kind of aided drawing plate drawn for mathematics | |
| CN203011324U (en) | Multi-functional measuring device | |
| CN206030882U (en) | Multifunctional ruler and compass for teaching purpose | |
| CN207752670U (en) | A kind of Multifunctional mathematics teaching device | |
| CN205102835U (en) | Gravity type slope measuring apparatu | |
| CN202965698U (en) | Multifunctional compasses | |
| CN203305722U (en) | Multifunctional movable triangular ruler | |
| CN103568662B (en) | Teaching ruler | |
| CN203134207U (en) | Mathematics teaching board | |
| CN202771686U (en) | Teaching aid for trigonometric function learning | |
| CN201522798U (en) | Triangular gauge teaching aids | |
| CN205167989U (en) | Mathematics teaching aid | |
| CN202976596U (en) | Multifunctional measuring inclination and trigonometric function measuring instrument | |
| CN208411209U (en) | A kind of drawing tools | |
| CN203026006U (en) | Trigonometric function measuring instrument | |
| CN204924246U (en) | Geographical dipperstick | |
| CN108068508A (en) | A kind of multifunctional assembled teaching aid | |
| CN206757964U (en) | A kind of mathematics sine and cosine instructional device | |
| CN202448597U (en) | Multifunctional math teaching device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171027 Termination date: 20180306 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |