CN204596257U - A kind of mathematics sin cos functions instructional device - Google Patents
A kind of mathematics sin cos functions instructional device Download PDFInfo
- Publication number
- CN204596257U CN204596257U CN201520200624.8U CN201520200624U CN204596257U CN 204596257 U CN204596257 U CN 204596257U CN 201520200624 U CN201520200624 U CN 201520200624U CN 204596257 U CN204596257 U CN 204596257U
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- function template
- permanent magnet
- demonstration board
- function
- connecting rod
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- 230000006870 function Effects 0.000 title abstract description 54
- 238000000034 method Methods 0.000 abstract description 7
- 238000005457 optimization Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
一种数学正余弦函数教学装置，包括演示板、函数模板，函数模板包括至少一个左函数模板和至少一个右函数模板，左函数模板和右函数模板上下两端均连接有第一永久磁铁，左函数模板和右函数模板的中间连接有第二永久磁铁，第二永久磁铁和设置在演示板背面的第三永久磁铁相互配合，第三永久磁铁设置在一连接块上，连接块水平和竖直方向分别设置有通孔，通孔内设置有水平连接杆和竖直连接杆，水平连接杆和竖直连接杆两端均安装有滚轮。本实用新型只需推动连接块即可将正弦函数的曲线平移演示出来，改变了传统教学中的描点作图过程，将平移过程清晰展现在学生的眼前，加强了学生对正弦函数的理解。
A teaching device for mathematical sine and cosine functions, including a demonstration board and a function template. The function template includes at least one left function template and at least one right function template. First permanent magnets are connected to the upper and lower ends of the left function template and the right function template. There is a second permanent magnet connected between the function template and the right function template. The second permanent magnet cooperates with the third permanent magnet set on the back of the demo board. The third permanent magnet is set on a connecting block, and the connecting block is horizontal and vertical. Through holes are respectively arranged in the directions, and horizontal connecting rods and vertical connecting rods are arranged in the through holes, and rollers are installed at both ends of the horizontal connecting rods and the vertical connecting rods. The utility model can demonstrate the translation of the curve of the sine function only by pushing the connecting block, which changes the point drawing process in the traditional teaching, clearly shows the translation process in front of the eyes of the students, and strengthens the students' understanding of the sine function.
Description
Technical field
The utility model relates to a kind of mathematics sin cos functions instructional device, belongs to mathematical education teaching aid application.
Background technology
In mathematical education process, trigonometric function is that the utilization of the most ABC, particularly sine function of study is the most extensive.Sine function is defined as: all correspond to unique angle for any one real number x, that is in Circular measure, there is an angle determined to equal this real number, and this angle correspond to well-determined sine value sinx, there is well-determined value sinx corresponding with it for any one real number x like this, according to the function that this correspondence rule is set up, be expressed as y=sinx, be called sine function.But the learning difficulty of sine function is comparatively large, and the examination question of sine function is also emphasis topic type in examination.If can accurately image sine function figure is demonstrated, for solution relevant issues can have very great help.
Utility model content
The purpose of this utility model is to provide a kind of mathematics sin cos functions instructional device, by the utility model can be vivid sine function demonstrated see to student, thus improve efficiency of teaching.
The purpose of this utility model is achieved through the following channels:
A kind of mathematics sin cos functions instructional device, comprise demonstration board, described demonstration board lower end is connected with support column, described support column lower end is connected with back up pad, described instructional device also comprises function template, described function template comprises at least one left function template and at least one right function template, described left function template and the upper and lower two ends of right function template are all connected with the first permanent magnet, the centre of described left function template and right function template is connected with the second permanent magnet, described second permanent magnet cooperatively interacts with the 3rd permanent magnet being arranged on the demonstration board back side, described 3rd permanent magnet is arranged on a contiguous block, described contiguous block level and vertical direction are respectively arranged with through hole, horizontal brace rod and vertical connecting link is provided with in through hole, described horizontal brace rod and vertical connecting link two ends are all provided with roller, described demonstration board has portrayed coordinate system, the described demonstration board back side is provided with baffle plate, square accommodating groove is formed between described baffle plate and demonstration board, described accommodating groove and roller cooperatively interact, the upper and lower two ends of described horizontal brace rod are connected with L-type connecting link, described L-type connecting link is connected with roller.
The utility model beneficial effect:
The utility model only need promote contiguous block and the curvilinear translation of sine function can be demonstrated out, changes the plotted versus process in conventional teaching, is presented in student at the moment, strengthens the understanding of student's offset of sinusoidal function by clear for translation motion.Adopt the utility model to carry out learning or imparting knowledge to students, the cognition of user's offset of sinusoidal function itself can be deepened.By using the utility model to impart knowledge to students, student can be made more skilled in the middle of utilization; The accuracy of simultaneously also drawing for teachers provides Reliable guarantee, can cannot embody the problem of manual drawing course by solution computer graphics well, makes student's skilled method for drafting grasping sine function figure in practical operation.The utility model structure is simple, easy to operate, suitable popularization.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 is the utility model Facad structure schematic diagram;
Fig. 2 is the utility model function template backsight structural representation;
Fig. 3 is the utility model demonstration board backsight structural representation;
Fig. 4 is the utility model contiguous block side-looking structural representation;
In figure, 1, demonstration board, 2, support column, 3, back up pad, 4, coordinate system, 5, function template, 6, left function template, 7, right function template, the 8, second permanent magnet, 9, the first permanent magnet, 10, baffle plate, 11, roller, 12, vertical connecting link, 13, horizontal brace rod, 14, contiguous block, 15, the 3rd permanent magnet, 16, L-type connecting link.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
Embodiment:
As shown in Figures 1 to 4, a kind of mathematics sin cos functions instructional device, comprise demonstration board 1, described demonstration board lower end is connected with support column 2, described support column lower end is connected with back up pad 3, described instructional device also comprises function template 5, described function template comprises at least one left function template 6 and at least one right function template 7, described left function template and the upper and lower two ends of right function template are all connected with the first permanent magnet 9, the centre of described left function template and right function template is connected with the second permanent magnet 8, described second permanent magnet cooperatively interacts with the 3rd permanent magnet 15 being arranged on the demonstration board back side, described 3rd permanent magnet is arranged on a contiguous block 14, described contiguous block level and vertical direction are respectively arranged with through hole, horizontal brace rod 13 and vertical connecting link 12 is provided with in through hole, described horizontal brace rod and vertical connecting link two ends are all provided with roller 11.
As the further optimization of this programme, described demonstration board is portrayed coordinate system 4.
As the further optimization of this programme, the described demonstration board back side is provided with baffle plate 10, forms square accommodating groove between described baffle plate and demonstration board, and described accommodating groove and roller cooperatively interact.
As the further optimization of this programme, the upper and lower two ends of described horizontal brace rod are connected with L-type connecting link 16, and described L-type connecting link is connected with roller.Ensure that horizontal brace rod and vertical connecting link there will not be collision phenomenon in contiguous block by L-type connecting link.
Concrete using method:
As shown in Figures 1 to 4, absorption attended operation is carried out by the first permanent magnet in the upper end of left function template and right function template or lower end, then the pole polarity of the magnetic pole of the second permanent magnet and the 3rd permanent magnet is arranged on the contrary, so just can by mobile link block just can control function template to carry out moving the utility model using method simple, and visually sin cos functions can be demonstrated and see to student.
The above; be only embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; any those of ordinary skill in the art are in the technical scope disclosed by the utility model; the change can expected without creative work or replacement, all should be encompassed within protection domain of the present utility model.Therefore, the protection domain that protection domain of the present utility model should limit with claims is as the criterion.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520200624.8U CN204596257U (en) | 2015-04-07 | 2015-04-07 | A kind of mathematics sin cos functions instructional device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520200624.8U CN204596257U (en) | 2015-04-07 | 2015-04-07 | A kind of mathematics sin cos functions instructional device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204596257U true CN204596257U (en) | 2015-08-26 |
Family
ID=53932387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520200624.8U Expired - Fee Related CN204596257U (en) | 2015-04-07 | 2015-04-07 | A kind of mathematics sin cos functions instructional device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204596257U (en) |
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2015
- 2015-04-07 CN CN201520200624.8U patent/CN204596257U/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: 20150826 Termination date: 20160407 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |