CN203288130U - Teaching aid for demonstrating functional limits of college mathematics - Google Patents
Teaching aid for demonstrating functional limits of college mathematics Download PDFInfo
- Publication number
- CN203288130U CN203288130U CN201320235838XU CN201320235838U CN203288130U CN 203288130 U CN203288130 U CN 203288130U CN 201320235838X U CN201320235838X U CN 201320235838XU CN 201320235838 U CN201320235838 U CN 201320235838U CN 203288130 U CN203288130 U CN 203288130U
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- deposit box
- demonstration
- safe deposit
- teaching aid
- panel
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Abstract
The utility model discloses a teaching aid for demonstrating functional limits of college mathematics, relates to a demonstration teaching aid for functions of the college mathematics, and solves the problem that in present college mathematics teaching, limited teaching time is wasted due to that a teacher has to draw different function limit curves on the blackboard to teach a lesson of the functional limits well. The teaching aid is characterized in that the front surface of a demonstration panel is provided with matrix-type grids and a coordinate system, each cross point of the matrix-type grids is provided with a hole in the thickness direction of the demonstration panel, and a rope, used for expressing the function limit curves, is connected with the holes through a plurality of corresponding rubber nails and abutted to the front surface of the demonstration panel; a left safety-deposit box and a right safety-deposit box are receptively fixed at the left side and the right side of the demonstration panel, and the left side plate of the left safety-deposit box and the right side plate of the right safety-deposit box are movable plates capable of moving up and down; the external surface of the rope and the external surfaces of the rubber nails are respectively provided with fluorescent layers; and a support is fixed at lower portions of the left and the right safety-deposit boxes of the demonstration panel, and universal road wheels are installed at the lower portion of the support. The teaching aid is used for demonstrating the functional limits of college mathematics.
Description
Technical field
The utility model relates to a kind of College Maths function demonstration teaching aid.
Background technology
In College Maths, this subject of the limit of function is abstract because of content, be difficult for understanding, and therefore, be a subject that finds it difficult to learn and practise in College Maths.The teacher, in order to have taught this subject, makes student's energy complete understanding and grasp, need to draw different limit of function curves on blackboard, has not only wasted limited hours of instruction, returns simultaneously teachers ' teaching and makes troubles.
The utility model content
The purpose of this utility model is to provide a kind of College Maths limit of function demonstration teaching aid, to solve at present in College Maths, teacher's this subject of the limit in order to have taught function, need to draw different limit of function curves on blackboard, not only waste limited hours of instruction, returned simultaneously the problem that teachers ' teaching is made troubles.
Realize above-mentioned purpose, the technical solution of the utility model is:
College Maths limit of function demonstration teaching aid, comprise the cotton rope of demonstrating panel and being used for the representative function limit curve, the front surface of described demonstration panel is provided with matrix form grid and coordinate system, each space in the matrix form grid is square, each joining place of matrix form grid is provided with hole along the thickness direction of demonstration panel, described cotton rope for the representative function limit curve connects with corresponding hole by a plurality of rubber tacks, the cotton rope that is used for the representative function limit curve abuts in the front surface of demonstration panel, the left surface of demonstration panel is fixed a left safe deposit box, the right flank of demonstration panel is fixed a right safe deposit box, the left plate of left safe deposit box and the right plate of right safe deposit box are the portable plate that can move up and down, be used for the outside surface of cotton rope of representative function limit curve and the outside surface of rubber tack and be respectively equipped with a fluorescence coating, the demonstration panel, the lower end of left safe deposit box and right safe deposit box is fixed with support, the lower end of support is equipped with four universal travel wheels.
Preferably, described four universal travel wheels are universal spacing road wheel.
Preferably, the outside surface of the right plate of the left plate of described left safe deposit box and right safe deposit box all is fixed with handle.
The utility model with respect to the beneficial effect of prior art is:
1, College Maths limit of function demonstration teaching aid of the present utility model has simple in structurely, uses and the characteristics of conveniently moving.During use, only need the teacher to adjust as required the fixed position of rubber tack, i.e. convertible different limit of function curve, show the speed of curve, effectively saved the hours of instruction in classroom, to teachers ' teaching, provides convenience.
2, the outside surface of the outside surface of cotton rope and rubber tack is respectively equipped with a fluorescence coating, can make the limit of function curve of expression more clear, is convenient to the student and sees clearly.
3, for the surface function limit curve of standard more, on the demonstration panel, the matrix form grid is set in advance, each space in the matrix form grid is square, can make more standard of the limit of function curve demonstrated.
4, left and right safe deposit box is set, can be convenient to keeping with in the realia placing box of rubber tack and the use of giving lessons, during use, only need upwards draw portable plate can take out article in case.
Description of drawings
Fig. 1 is the front view of College Maths limit of function demonstration teaching aid of the present utility model;
Fig. 2 is the vertical view of Fig. 1, and support and universal travel wheel do not represent.
Wherein, demonstration panel 1, matrix form grid 2, coordinate system 3, hole 4, be used for cotton rope 5, rubber tack 6, left safe deposit box 7, right safe deposit box 8, left plate 9, right plate 10, support 11, universal travel wheel 12, the handle 13 of representative function limit curve.
Embodiment
as Fig. 1, shown in Figure 2, College Maths limit of function demonstration teaching aid, comprise the cotton rope 5 of demonstrating panel 1 and being used for the representative function limit curve, the front surface of described demonstration panel 1 is provided with matrix form grid 2 and coordinate system 3, each space in matrix form grid 2 is square, each joining place of matrix form grid 2 is provided with hole 4 along the thickness direction of demonstration panel 1, described cotton rope for the representative function limit curve 5 connects with corresponding hole 4 by a plurality of rubber tacks 6, the cotton rope 5 that is used for the representative function limit curve abuts in the front surface of demonstration panel 1, the left surface of demonstration panel 1 is fixed a left safe deposit box 7, the right flank of demonstration panel 1 is fixed a right safe deposit box 8, the left plate 9 of left safe deposit box 7 and the right plate 10 of right safe deposit box 8 are the portable plate that can move up and down, before namely adjacent with portable plate, the inside surface of back side panel and portable plate opposite position are provided with chute, the both sides of portable plate are arranged in corresponding chute, be used for the outside surface of cotton rope 5 of representative function limit curve and the outside surface of rubber tack 6 and be respectively equipped with a fluorescence coating, demonstration panel 1, the lower end of left safe deposit box 7 and right safe deposit box 8 is fixed with support 11, the lower end of support 11 is equipped with four universal travel wheels 12, described four universal travel wheels 12 are universal spacing road wheel, are the market outsourcing piece, the outside surface of the left plate 9 of described left safe deposit box 7 and the right plate 10 of right safe deposit box 8 all is fixed with handle 13, is convenient to move up and down portable plate.
During use, with single line rope 5 representative function limit curves, and utilize rubber tack 6 that described cotton rope 5 is fixed on demonstration panel 1 in corresponding hole 4.
Claims (3)
1. College Maths limit of function demonstration teaching aid, comprise the cotton rope (5) of demonstrating panel (1) and being used for the representative function limit curve, it is characterized in that: the front surface of described demonstration panel (1) is provided with matrix form grid (2) and coordinate system (3), each space in matrix form grid (2) is square, each joining place of matrix form grid (2) is provided with hole (4) along the thickness direction of demonstration panel (1), described cotton rope for the representative function limit curve (5) connects with corresponding hole (4) by a plurality of rubber tacks (6), the cotton rope (5) that is used for the representative function limit curve abuts in the front surface of demonstration panel (1), the left surface of demonstration panel (1) is fixed a left safe deposit box (7), the right flank of demonstration panel (1) is fixed a right safe deposit box (8), the left plate (9) of left safe deposit box (7) and the right plate (10) of right safe deposit box (8) are the portable plate that can move up and down, be used for the outside surface of cotton rope (5) of representative function limit curve and the outside surface of rubber tack (6) and be respectively equipped with a fluorescence coating, demonstration panel (1), the lower end of left safe deposit box (7) and right safe deposit box (8) is fixed with support (11), the lower end of support (11) is equipped with four universal travel wheels (12).
2. College Maths limit of function demonstration teaching aid as claimed in claim 1, it is characterized in that: described four universal travel wheels (12) are universal spacing road wheel.
3. College Maths limit of function demonstration teaching aid as claimed in claim 1 or 2, it is characterized in that: the outside surface of the left plate (9) of described left safe deposit box (7) and the right plate (10) of right safe deposit box (8) all is fixed with handle (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320235838XU CN203288130U (en) | 2013-05-03 | 2013-05-03 | Teaching aid for demonstrating functional limits of college mathematics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320235838XU CN203288130U (en) | 2013-05-03 | 2013-05-03 | Teaching aid for demonstrating functional limits of college mathematics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203288130U true CN203288130U (en) | 2013-11-13 |
Family
ID=49544483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320235838XU Expired - Fee Related CN203288130U (en) | 2013-05-03 | 2013-05-03 | Teaching aid for demonstrating functional limits of college mathematics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203288130U (en) |
-
2013
- 2013-05-03 CN CN201320235838XU patent/CN203288130U/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: 20131113 Termination date: 20140503 |