CN202331986U

CN202331986U - Common graph demonstrator for primary school mathematics

Info

Publication number: CN202331986U
Application number: CN201120503280XU
Authority: CN
Inventors: 王兴云
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-27
Filing date: 2011-11-27
Publication date: 2012-07-11
Anticipated expiration: 2021-11-27

Abstract

The utility model provides a common graph demonstrator for primary school mathematics and relates to the technical field of primary school mathematics teaching aids. The demonstrator comprises a plastic board, a fixing bar and a rubber rib; small holes are distributed in equal distance on the plastic board; a base which is perpendicular to the plastic board is arranged at one side of the plastic board; 4-10 fixing bars matched with the small holes are provided; furthermore 3-6 rubber ribs which can be sleeved on the fixing bars are provided. Compared with the existing teaching manner, the common graph demonstrator provided by the utility model has the advantages that the demonstrator is visual in teaching, simple in structure and easy to manufacture and explain and can be used for demonstrating various common triangles and quadrilaterals in primary school mathematics in a popular and easy understanding manner and simplifying the mathematics knowledge.

Description

The common figure demonstrating device of primary school mathematics

Technical field

The utility model relates to a kind of primary school mathematics teaching aid, is the common figure demonstrating device of primary school mathematics specifically.

Background technology

In primary school math teaching, need explanation common triangle like equilateral triangle, isosceles triangle and scalene triangle; Also have common quadrilateral like: square, rectangle, parallelogram and trapezoidal etc., how to utilize a teaching aid that it is showed, do not have the special teaching aid of this respect.

The utility model content

The purpose of the utility model is the deficiency to prior art, provides a kind of primary school mathematics common figure demonstrating device.

The purpose of the utility model realizes through following technological means: the common figure demonstrating device of primary school mathematics, form by plastic plate, hold-down bars and rubber band, and equidistantly distributing aperture above the said plastic plate, plastic plate one side has the base perpendicular to it.

Include 4～10 hold-down barss that are complementary with said aperture.

Also comprise 3～6 rubber bands that can be enclosed within on the hold-down bars.

Compare with existing form of teaching, the utlity model has impart knowledge to students directly perceived, features simple structure, be easy to make and explanation, can demonstrate various triangles and quadrilateral common in the primary school mathematics, easy-to-understand, can be with advantages such as mathematical knowledge simplifications.

Description of drawings

Fig. 1 is the utility model synoptic diagram;

Fig. 2 is the utility model embodiment synoptic diagram.

1. plastic plates wherein, 2. aperture, 3. base, 4. hold-down bars, 5, rubber band.

Embodiment

Below in conjunction with description of drawings the utility model is done further to describe in detail:

The use of the common figure demonstrating device of this primary school mathematics is: with the demonstration parallelogram is example: any four at plastic plate 1 become in four corresponding apertures 2 of parallelogram to insert hold-down bars 4; Be enclosed within on four hold-down barss 4 with rubber band 5, formed parallelogram; Likewise reason can also be showed various triangles and other common quadrilateral.

In a word, the utility model provides primary school mathematics common figure demonstrating device.The above; Be merely a part of embodiment of the utility model; The protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.

Claims

1. the common figure demonstrating device of primary school mathematics is made up of plastic plate (1), hold-down bars (4) and rubber band (5), it is characterized in that: equidistantly distributing aperture (2) above the said plastic plate (1), plastic plate (1) one side has the base (3) perpendicular to it.

2. the common figure demonstrating device of primary school mathematics according to claim 1 is characterized in that: include 4～10 hold-down barss (4) that are complementary with said aperture (2).

3. the common figure demonstrating device of primary school mathematics according to claim 1 is characterized in that: also comprise 3～6 rubber bands (5) that can be enclosed within on the hold-down bars (4).