CN203344570U - Multipurpose math teaching aid - Google Patents

Abstract

The utility model provides a multipurpose math teaching aid, and belongs to the field of teaching aids. The multipurpose math teaching aid structurally comprises a main scale and an assistant scale. One end of the assistant scale is hinged to the left portion of the main scale, and the hinged position is provided with an angle gauge; the position, along the middle portion of the surface of the assistant scale, of the assistant scale is provided with a slide rail; two gauge piles capable of sliding are arranged in the slide rail, and the two gauge piles are connected together through a cotton rope; the cotton rope penetrates through a chalk drawing tool; the position, on one side of the slide rail, of the assistant scale is provided with scales corresponding to the gauge piles. Compared with the prior art, the multipurpose math teaching aid has the advantages of being reasonable in design, simple in structure, good in using effect and the like.

Description

A kind of multiplex mathematics teaching aid

Technical field

The utility model relates to the teaching aid field, specifically a kind of multiplex mathematics teaching aid.

Background technology

At present, in order to teach mathematical knowledge, the teacher often need to be drawn with chalk on blackboard, and drawing tools commonly used is set square for example, can be for drawing triangle, and ruler can be used for the picture straight line, the oval not corresponding instrument of drawing.These drawing teaching aids that use are drawn, and its weak point is: function ratio is more single, and quantity is a lot, takes in and carry all inconveniences, especially when painting folder angle and ellipse, lacks to facilitate handy teaching aid, can not meet the needs that teacher gives lessons.

Summary of the invention

Technical assignment of the present utility model is for the deficiencies in the prior art, and a kind of reasonable in design, multiplex mathematics teaching aid that result of use is good is provided.

The utility model solves the technical scheme that its technical problem adopts:

A kind of multiplex mathematics teaching aid, comprise main scale and secondary chi, one end of secondary chi with the left part of main scale, be hinged, hinged place is provided with protractor, be provided with slideway along chi face middle part on secondary chi, be provided with two guide piles that can slide in slideway, be connected together by a cotton rope between two guide piles, be installed with the chalk renderer on cotton rope, on the secondary chi of slideway one side, be provided with the scale corresponding with guide pile.

A kind of multiplex mathematics teaching aid, the length of its secondary chi is less than the length of main scale, and the width of secondary chi is identical with the main scale width.

Compared with prior art, the beneficial effect produced is the utility model:

The utlity model has the characteristics such as reasonable in design, simple in structure, easy to use, function admirable, practicality,

Function ratio is more, can draw circle and ellipse, has facilitated teaching, has improved teacher's efficiency of teaching, has reduced working strength.

The accompanying drawing explanation

Accompanying drawing 1 is front portion structure schematic diagram of the present utility model.

In figure: 1, chalk renderer, 2, cotton rope, 3, guide pile, 4, scale, 5, slideway, 6, secondary chi, 7, protractor, 8, main scale.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described in detail below.

As shown in drawings, multiplex mathematics teaching aid of the present utility model, its structure comprises main scale 8 and secondary chi 6, one end of secondary chi 6 with the left part of main scale 8, be hinged, hinged place is provided with protractor 7, on secondary chi 6, along chi face middle part, is provided with slideway 5, be provided with two guide piles that can slide 3 in slideway 5, be connected together by a cotton rope 2 between two guide piles 3, be installed with chalk renderer 1 on cotton rope 2, be provided with the scale corresponding with guide pile 34 on the secondary chi 6 of slideway 5 one sides; The length of secondary chi 6 is less than the length of main scale 8, and the width of secondary chi 6 is identical with main scale 8 width.

Can draw straight line by main scale 8; Throughput hornwork 7 between secondary chi 6 and main scale 8, the angle that can draw accurately certain angle; , when needing drafting oval, can be undertaken by guide pile 3 and chalk renderer 1, scale 4 can accurately be located two distances between guide pile 3 simultaneously.

Its processing and fabricating of multiplex mathematics teaching aid of the present utility model is simple and convenient, and shown in the by specification accompanying drawing, processing and fabricating gets final product.

Except the described technical characterictic of specification, be those skilled in the art's known technology.

Claims (2)

1. a multiplex mathematics teaching aid, it is characterized in that comprising main scale and secondary chi, one end of secondary chi with the left part of main scale, be hinged, hinged place is provided with protractor, be provided with slideway along chi face middle part on secondary chi, be provided with two guide piles that can slide in slideway, be connected together by a cotton rope between two guide piles, be installed with the chalk renderer on cotton rope, on the secondary chi of slideway one side, be provided with the scale corresponding with guide pile.

2. a kind of multiplex mathematics teaching aid according to claim 1, is characterized in that the length of secondary chi is less than the length of main scale, and the width of secondary chi is identical with the main scale width.

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