CN202394417U - Six-equally-partitioned cubic movable teaching model - Google Patents

Abstract

The utility model discloses a six-equally-partitioned cubic movable teaching model. The six-equally-partitioned cubic movable teaching model comprises a cube. The cube comprises six equal cones, wherein the six cones can be rightly disposed inside the cube, and the surface of the cube is transparent or semi-transparent. The structure of the six-equally-partitioned cubic movable teaching model helps students to visually understand that the volume of each cone is one-sixth of the cube, that is to say, Vcone = bottom area * height/3. Moreover, the length of the bottom edge and the height are measured, and the bottom area is calculated, thereby enhancing the capability of the students to know and understand the formula of the volume of each cone, improving the capability of the students to use hands, and improving the learning effects.

Description

A kind of six five equilibrium cube activity teaching models

Technical field

The utility model relates to a kind of teaching mode, relates in particular to a kind of six five equilibrium cube activity teaching models.

Background technology

Teaching mode is a kind of teaching appliance commonly used in the mathematical education, helps teacher image, lectures especially solid structure of mathematical knowledge intuitively, effectively, helps the student to understand better and grasps mathematical knowledge.In present teaching; How image, clearly understand the cubature formula of cone; Especially let student oneself go to derive and verify that the cubature formula of cone is difficult problem in the mathematical education; Study carefully its origin and be to lack a kind of teaching mode and can demonstrate the structural relation between centrum and the cube, also can't make the student pass through the two structural relation of physical varification.

The disclosed teaching mode of the utility model has overcome the problems referred to above.

Summary of the invention

The purpose of the utility model provides a kind of teaching mode, can show the two structural relation of cube and centrum, and can verify the volume relationship between the two, can let the cubature formula of student through starting through textural association practical proof centrum.

For realizing the foregoing invention purpose, the utility model is realized through following technical proposals:

A kind of six five equilibrium cube activity teaching models comprise a cube, comprise six identical cones in the cube.

For the ease of taking out and put back to the centrum in the cube, the repeated use of implementation model, it is open that described cube has one side at least, can after opening, take out, put back to centrum.It is described that to have one side at least be that open being meant guaranteeing can to open a face, other five face closures under the complete situation of cube; Can also be open wherein two faces, other four face closures, suchlike situation it will be appreciated by those skilled in the art that.Five face closures of cube preferably, a face is open.

For the ease of observing the display case of centrum in the cube, be convenient to centrum and pick and place, the six five equilibrium cube activity teaching models of the utility model, cubical surface is transparent or translucent.

Said cube adopts transparent material to process, and the utility model does not limit concrete transparent material type, includes but not limited to organic glass, transparent plastic etc.

The six five equilibrium cube activity teaching models of the utility model; In order to be used to demonstrate the cube volume relationship corresponding with centrum, preferred, six cones are rectangular pyramid; The bottom surface of cone is and identical square of face of square, half the in the cubical length of side of cone high.

Based on said structure, six cones can be positioned over cube inside, and fill up cube.

The cube activity teaching model of the utility model can let student's direct structural relation of checking centrum and square on the physical arrangement, verifies the cubature formula of cone; And set up the geometric relationship between cone volume and the cube volume, and not only improve students'interest in learning, foster students', the novelty thinking ability that also helps to cultivate the student promotes results of learning; And the cube activity teaching model of the utility model can be reused, and repeatable operation has improved its serviceable life.

Description of drawings

Fig. 1 a is three face synoptic diagram of cube of the six five equilibrium cube activity teaching models of the utility model;

Fig. 1 b is the centrum side and the schematic bottom view of the six five equilibrium cube activity teaching models of the utility model;

Fig. 3 is positioned over the inner combination synoptic diagram of cube for the six five equilibrium cube activity teaching model cones of the utility model;

Fig. 4 is positioned over the inner decomposing schematic representation of cube for the six five equilibrium cube activity teaching model cones of the utility model.

Embodiment

Can understand the utility model better in conjunction with accompanying drawing and specific embodiment.

As shown in Figure 4, the cube activity teaching model of the utility model comprises a cube, comprises six identical cones (21,22,23,24,25,26) in the cube.

Wherein, cube face is transparent, and cubical one of them face 3 of six faces is open.

With reference to figure 1a, Fig. 1 b, the bottom surface of cone is and identical square in surface of square, and the height of cone equals the length of side half the of square.

Wherein, six cones are placed on cube inside, and just can fill up cube.

The six five equilibrium cube activity teaching models of the utility model, establishing the cubical length of side is a, the volume of a cone equals the sixth of cube volume, i.e. V _Awl=V _Cube/ 6=a ³/ 6.

Floorage=the a2 of cone, height=a/2, thus can verify V awl=floorage * height/3.

The above embodiment is the utility model preferred embodiment; The utility model is not limited to the foregoing description; Under the enlightenment of the utility model; Those skilled in the art need not spend creative work and the equivalence made replacement, and for example the size of square, material etc. all are that those skilled in the art can change as required, all belong to the protection domain of the utility model.The protection domain of the utility model is covered by claim and equivalents thereof.

Claims (7)

1. a five equilibrium cube activity teaching model is characterized in that said model comprises a cube, comprises six identical cones in the said cube.

2. six five equilibrium cube activity teaching models according to claim 1 is characterized in that at least one face of said cube is open, are used for the taking-up of centrum and put back to.

3. six five equilibrium cube activity teaching models according to claim 2 is characterized in that five face closures of said cube, and a face is open.

4. six five equilibrium cube activity teaching models according to claim 1 is characterized in that said cubical surface is transparent or semitransparent.

5. six five equilibrium cube activity teaching models according to claim 4 is characterized in that said cube processed by organic glass or transparent plastic.

6. six five equilibrium cube activity teaching models according to claim 1 is characterized in that described six cones are rectangular pyramid, and the bottom surface of cone is for being identical square with face of square, and the height of cone is the half the of the cubical length of side.

7. six five equilibrium cube activity teaching models according to claim 6 is characterized in that said six cones are positioned over cube inside and fill up cube.

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