CN201359793Y

CN201359793Y - Multifunctional geometric teaching aid

Info

Publication number: CN201359793Y
Application number: CNU2009200839957U
Authority: CN
Inventors: 卢铜山
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-03
Filing date: 2009-03-03
Publication date: 2009-12-09
Anticipated expiration: 2019-03-03

Abstract

The utility model discloses a multifunctional geometric teaching aid. The teaching aid mainly consists of a functional disk, a magnet and a handle, wherein the functional disk takes the semi-circle shape; a protractor calibrated scale is arranged on the cambered surface of the semi-circle shape of the functional disk; a ruler calibrated scale is arranged on the straight-line shaped surface of the functional disk; a scale hole is arranged at the corresponding position on the functional hole; a hole is disposed in the center of the semi-circle shape of the functional disk; and the handle penetrates through the hole to be fixed with the magnet. The teaching aid has the advantages of simple structure, long service life, light and portable carrying and full functions, and is integrated with a triangle, a ruler, a compass and a protractor into one, therefore, the teaching aid can be used conveniently.

Description

Multi-functional how much teaching aids

Technical field

The utility model relates to the technical field of teaching aid, more particularly relates to be used to do geometric teaching aid.

Background technology

The teacher is when carrying out geometric education to the student, will inevitably use set square in the classroom, ruler, several teaching such as compasses and protractor teaching aid, at present, normally used how much teaching aids of instructors all are fixed in shape and the very single geometric configuratioies of function that adopt wooden materials to be made, as set square with 30 degree angles, the set square of band miter angle, compasses and protractor, there is the deficiency of the following aspects in these how much teaching aids: the one, and compasses are in use, easily blackboard is damaged, and use also very inconvenient, the 2nd, adopt wooden materials to make, heavy and bad easily, if fall on the ground because of carelessness, this how much teaching aids just might be fallen to loose and bad reparation; The 3rd, their function is more single, usually needs during teaching they are all moved in the classroom, very trouble; The 4th, in use, this how much teaching aids do not have the place to place, can only be placed on the dais, and be chalk dust entirely thereby make on the dais, very unclean.

The utility model content

The purpose of this utility model provides a kind of simple in structure in order to solve above-mentioned deficiency exactly, and is light, complete function and multi-functional how much teaching aids easy to use.

The technical solution that the utility model adopts in order to solve above-mentioned deficiency is as follows:

Multi-functional how much teaching aids, it mainly is made up of functional disc, magnet and handle, described functional disc semicircular in shape, the semicircular cambered surface of this functional disc is provided with the protractor graduated scale, this functional disc linear face is provided with the ruler graduated scale, corresponding position on this functional disc also is provided with the scale hole, and the semicircle center of described functional disc has the hole, and handle passes this hole and magnet fixes.

Offer the scallop hole that is symmetrical on the described functional disc.

Described handle is "T"-shaped, and this handle utilizes viscose glue to fixedly connected with magnet.

The center of described handle offers through hole.

Described functional disc adopts transparent material to make.

The beneficial effect that the utility model adopts above-mentioned technical solution to reach is: simple in structure, the whole functional dish adopts the machine disposal pressed moulding, there is not interface, not fragile, long service life, light, on functional disc, offer the scallop hole that is symmetrical, alleviated its weight greatly, complete function, it collects set square, ruler, compasses and protractor are in one, the teacher does not again need to embrace a pile teaching aid and gone to class, thereby has alleviated teacher's burden greatly, and is easy to use, in use, utilize magnet that functional disc is adsorbed on the blackboard, and can arbitrarily move as required and rotate, can draw needed difformity, when drawing circle as needs, earlier determine a center of circle, alignd with centre point in the center of this teaching aid, select the point of radius with chalk, teaching aid is rotated a circle, be that available chalk is drawn circle easily, after finishing using, this teaching aid be adsorbed in the corner of blackboard and get final product, thereby need not to take the limited dais table top of teacher, also guaranteed the neat and tidy at dais.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

The A-A sectional structure synoptic diagram of Fig. 2 Fig. 1.

Embodiment

By illustrated in figures 1 and 2, multi-functional how much teaching aids, it is mainly by functional disc 1, magnet 2 and handle 3 are formed, described functional disc 1 semicircular in shape, this functional disc 1 semicircular cambered surface is provided with protractor graduated scale 4, this functional disc 1 linear face is provided with ruler graduated scale 5, corresponding position on this functional disc 1 also is provided with scale hole 6, at these scale hole 6 other concrete numerical value that also should identify this hole correspondence, when drawing special geometric form, just can utilize these holes very easily, concrete using method is: look for suitable pitch of holes earlier, again place, this hole with chalk point on what time, with chi some is linked to each other at last and can draw difform geometric figure, very convenient to use, described functional disc 1 semicircle center has the hole, described handle 3 is "T"-shaped, this handle 3 utilizes viscose glue to interfix with magnet 2, for the convenience on using, through hole 7 can also be offered in center at described handle 3, adopt transparent material to make functional disc 1, in order to alleviate the weight of teaching aid, reduce the cost of manufacture of teaching aid, on functional disc 1, also can offer the scallop hole 8 that is symmetrical.

Claims

1, multi-functional how much teaching aids, it is characterized in that: it mainly is made up of functional disc, magnet and handle, described functional disc semicircular in shape, the semicircular cambered surface of this functional disc is provided with the protractor graduated scale, this functional disc linear face is provided with the ruler graduated scale, corresponding position on this functional disc also is provided with the scale hole, and the semicircle center of described functional disc has the hole, and handle passes this hole and magnet fixes.

2, multi-functional how much teaching aids according to claim 1 is characterized in that: offer the scallop hole that is symmetrical on the described functional disc.

3, multi-functional how much teaching aids according to claim 1, it is characterized in that: described handle is "T"-shaped, and this handle utilizes viscose glue to fixedly connected with magnet.

4, multi-functional how much teaching aids according to claim 1, it is characterized in that: the center of described handle offers through hole.

5, according to claim 1,2,3 or 4 described multi-functional how much teaching aids, it is characterized in that: described functional disc adopts transparent material to make.