CN202795828U

CN202795828U - Functional limit demonstration teaching tool special for advanced mathematics

Info

Publication number: CN202795828U
Application number: CN 201220518809
Authority: CN
Inventors: 苏丽红
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-10-11
Filing date: 2012-10-11
Publication date: 2013-03-13
Anticipated expiration: 2022-10-11

Abstract

Disclosed is a functional limit demonstration teaching tool special for advanced mathematics, relating to a functional limit demonstration teaching tool. The utility model aims to solve the problems that when conventional functional limit teaching tools are utilized, different functions have to be drawn repeatedly, thus not only wasting classroom teaching time but also bringing troubles to teachers. A shell of the functional limit demonstration teaching tool is arranged on a pedestal. The front end surface of the shell is provided with a functional limit demonstration opening. An iron plate is painted with white paint and printed with a grid and a coordinate system, which are criss-cross. A frosted glass plate and the iron plate are sequentially arranged inside the shell from front to rear. A plurality of coordinate point fixing members are respectively and slidably arranged on ropes. The both ends of the ropes are knotted. The plurality of ropes are arranged on the frosted glass plate in the functional limit demonstration opening through the plurality of coordinate point fixing members. Function curves can be changed by adjusting the positions of the coordinate point fixing members. The functional limit demonstration teaching tool can be applied to the teaching of advanced mathematics.

Description

A kind of limit of function demonstration teaching aid of higher mathematics special use

Technical field

The utility model relates to a kind of limit of function demonstration teaching aid, is specifically related to a kind of limit of function demonstration teaching aid of higher mathematics special use.

Background technology

Higher mathematics is a basic theory class, it is the necessary rudimentary knowledge of other specialized courses of study, it also is the important tool that solves scientific and technical knowledge, higher mathematics research to as if function, used instrument is the limit, therefore, the limit of function of learning well in the higher mathematics partly is the most important thing, and at present in colleges and universities, about the teaching aid of limit of function aspect seldom, substantially all be that the teacher explains at blackboard, content is abstract, is difficult for understanding, and existing limit of function teaching aid need to be drawn different functions repeatedly, not only waste the hours of instruction in classroom, return the teacher and be with inconvenience.

Summary of the invention

The purpose of this utility model is need to repeatedly draw different functions in order to solve existing limit of function teaching aid, not only wastes the hours of instruction in classroom, returns the teacher with inconvenient problem, and then a kind of limit of function demonstration teaching aid of higher mathematics special use is provided.

The technical solution of the utility model is: a kind of limit of function demonstration teaching aid of higher mathematics special use comprises housing and base, housing is arranged on the base, described limit of function demonstration teaching aid also comprises iron plate, focussing glass, many cotton ropes and a plurality of coordinate points fixture, have limit of function demonstration mouth on the front end face of housing, iron plate being is brushed with the iron plate of white paint, be printed on crisscross grid and coordinate system on the iron plate, focussing glass and iron plate are successively set in the housing from front to back, the coordinate points fixture comprises inserted slot, cardboard and magnet geometrical clamp, cotton rope slidably is located on the magnet geometrical clamp, inserted slot is packed in the upper end of magnet geometrical clamp, cardboard is inserted in the inserted slot, a plurality of coordinate points fixtures are arranged on the cotton rope by described mode respectively, and all tie a knot in the two ends of cotton rope, many cotton ropes are arranged on the limit of function demonstration mouthful interior focussing glass by a plurality of coordinate points fixtures, come transform function graph by the position of adjusting the coordinate points fixture.

Described crisscross grid is yellow grid, and coordinate is green coordinate system or red scale system.

The utility model compared with prior art has following effect: 1. the utility model need not the teacher and draws function curve at focussing glass, the position that only needs the teacher to adjust as required the coordinate points fixture is convertible different function curve, it is fast to regulate the speed, convenient to use, effectively saved the hours of instruction in classroom.2. the utility model is simple in structure, is easy to realize, is convenient to promote the use of on a large scale.

Description of drawings

Fig. 1 is one-piece construction synoptic diagram of the present utility model; Fig. 2 is the structural representation of the utility model coordinate points fixture.

Embodiment

Embodiment one: present embodiment is described in conjunction with Fig. 1 and Fig. 2, present embodiment comprises housing 1 and base 2, housing 1 is arranged on the base 2, described limit of function demonstration teaching aid also comprises iron plate 3, focussing glass 4, many cotton ropes 5 and a plurality of coordinate points fixture 6, have limit of function demonstration mouthful 1-1 on the front end face of housing 1, iron plate 3 is for being brushed with the iron plate of white paint, be printed on crisscross grid 3-1 and coordinate system 3-2 on the iron plate 3, focussing glass 4 and iron plate 3 are successively set in the housing 1 from front to back, coordinate points fixture 6 comprises inserted slot 6-1, cardboard 6-2 and magnet geometrical clamp 6-3, cotton rope 5 slidably is located on the magnet geometrical clamp 6-3, inserted slot 6-1 is packed in the upper end of magnet geometrical clamp 6-3, cardboard 6-2 is inserted in the inserted slot 6-1, a plurality of coordinate points fixtures 6 are arranged on the cotton rope 5 by described mode respectively, and all tie a knot in the two ends of cotton rope 5, many cotton ropes 5 are arranged on the focussing glass 4 in the limit of function demonstration mouthful 1-1 by a plurality of coordinate points fixtures 6, come transform function graph by the position of adjusting coordinate points fixture 6.

The crisscross grid 3-1 of present embodiment is yellow grid, and coordinate system 3-2 is green coordinate system or red scale system.So arrange, yellow grid is convenient to the position that the teacher finds suitable coordinate points fixture 6 fast, and the student does not see the Chu Huangse grid, avoided the inconvenience that too much brings to the student because of lines, green coordinate system or red scale system can guarantee that the student sees coordinate system and cotton rope 5 clearly, has improved student's learning interest.

The utility model can be write mark at cardboard 6-2 in use, has brought convenience for giving lessons of teacher.

Claims

1. the limit of function demonstration teaching aid of a higher mathematics special use, it comprises housing (1) and base (2), housing (1) is arranged on the base (2), it is characterized in that: described limit of function demonstration teaching aid also comprises iron plate (3), focussing glass (4), many cotton ropes (5) and a plurality of coordinate points fixture (6), have limit of function demonstration mouthful (1-1) on the front end face of housing (1), iron plate (3) is for being brushed with the iron plate of white paint, be printed on crisscross grid (3-1) and coordinate system (3-2) on the iron plate (3), focussing glass (4) and iron plate (3) are successively set in the housing (1) from front to back, coordinate points fixture (6) comprises inserted slot (6-1), cardboard (6-2) and magnet geometrical clamp (6-3), cotton rope (5) slidably is located on the magnet geometrical clamp (6-3), inserted slot (6-1) is packed in the upper end of magnet geometrical clamp (6-3), cardboard (6-2) is inserted in the inserted slot (6-1), a plurality of coordinate points fixtures (6) are arranged on the cotton rope (5) by described mode respectively, and all tie a knot in the two ends of cotton rope (5), many cotton ropes (5) are arranged on the interior focussing glass (4) of limit of function demonstration mouthful (1-1) by a plurality of coordinate points fixtures (6), come transform function graph by the position of adjusting coordinate points fixture (6).

2. the limit of function demonstration teaching aid of a kind of higher mathematics special use according to claim 1, it is characterized in that: described crisscross grid (3-1) is yellow grid, coordinate system (3-2) is green coordinate system or red scale system.