CN203288130U - Teaching aid for demonstrating functional limits of college mathematics - Google Patents

Abstract

University mathematics function limit demonstration teaching aid. The invention relates to a teaching tool for demonstration of university mathematics functions. To solve the current problem in college mathematics, teachers need to draw different function limit curves on the blackboard in order to teach the limit of functions well, which wastes limited teaching time. The front surface of the demonstration panel is provided with a matrix grid and a coordinate system, and holes are provided at each intersection point of the matrix grid along the thickness direction of the demonstration panel, and the wires used to represent the limit curve of the function pass through multiple rubber nails and The corresponding holes are connected, and the wire rope is attached to the front surface of the demonstration panel, and a left and right safe deposit box is fixed on the left and right sides of the demonstration panel, and the left and right side plates of the left and right safe deposit boxes are for The movable plate moving up and down, the outer surface of the wire rope and the outer surface of the rubber nail are respectively provided with a fluorescent layer, the left and right safe deposit box lower ends of the demonstration panel are fixed with a support, and the lower end of the support is equipped with a universal traveling wheel. The utility model is used for the limit demonstration of university mathematics functions.

Description

College Maths limit of function demonstration teaching aid

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. A university mathematics function limit demonstration teaching aid, comprising a demonstration panel (1) and a string (5) for representing a function limit curve, is characterized in that: the front surface of the described demonstration panel (1) is provided with a matrix type Grid (2) and coordinate system (3), each space in the matrix grid (2) is a square, and each intersection point of the matrix grid (2) is along the thickness direction of the demo panel (1) Holes (4) are provided, and the wires (5) used to represent the limit curve of the function are connected to the corresponding holes (4) through a plurality of rubber nails (6), and the wires (5) used to represent the limit curve of the function ( 5) Attach to the front surface of the demo panel (1), fix a left safe deposit box (7) on the left side of the demo panel (1), and fix a right safe deposit box (8) on the right side of the demo panel (1) , the left side plate (9) of the left safekeeping box (7) and the right side plate (10) of the right safekeeping box (8) are movable plates that can move up and down, and are used to represent the wire rope (5) of the function limit curve The outer surface of the outer surface and the rubber nail (6) is respectively provided with a fluorescent layer, and the lower end of the demonstration panel (1), the left safekeeping box (7) and the right safekeeping box (8) is fixed with a support (11), and the bottom of the support (11) Four universal traveling wheels (12) are installed at the lower end. the 2. The university mathematics function limit demonstration teaching aid as claimed in claim 1, characterized in that: said four universal traveling wheels (12) are all universal limiting traveling wheels. the 3. as claimed in claim 1 or 2 described college mathematics function limit demonstration teaching aid, it is characterized in that: the left side plate (9) of described left safe deposit box (7) and the right side plate (8) of right safe deposit box (8) 10) are fixed with handles (13) on the outer surface. the

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