CN2246836Y

CN2246836Y - Polyhedral teaching built-up blocks

Info

Publication number: CN2246836Y
Application number: CN 95218619
Authority: CN
Inventors: 陆登广
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-24
Filing date: 1995-07-24
Publication date: 1997-02-05
Anticipated expiration: 2005-07-24

Abstract

The utility model relates to a polyhedral teaching built-up board which is composed of a plurality of triangular built-up boards, rectangular built-up boards, isosceles trapezoidal built-up boards and square built-up boards. The edge of each built-up board is inserted by using coloring plastic and magnetic material, and accordingly, the built-up board can be optionally built and disassemble into various different polyhedrons. Using the utility model can enable students to intuitionally establish solid geometry concept during teaching, to systematically control the basic characteristic of spatial patterns, to control polyhedral brushwork and to calculate surface areas and volume, and the utility model can play a better help function for developing students' logical thinking capacity, space imaginative power and problem analyzing and solving capacity.

Description

Polyhedron teaching jigsaw

Polyhedron teaching jigsaw is a kind of cultural goods.

At present, the student faces a problem during study solid geometry on the basis of study junior middle school's plane geometry, is exactly how to be familiar with the stereographic map on the plane and to make stereographic map.Because of in study, lacking teaching aid, the student can not visual sense to the contact of figure and material object, can not comparatively fast set up concept of space.

The purpose of this utility model is to provide a kind of polyhedron jigsaw of energy aided education, can piece together splitting into multiple polyhedron, allows the student set up the notion and the character of space point, line, surface rapidly.

The purpose of this utility model has been achieved in that a square floor (1), 1 square jigsaw that the square jigsaw of 2 block lengths (3) is combined into, 2 square jigsaw using 4 right-angle triangle jigsaw (5) and 2 isosceles trapezoid jigsaw (2) to be combined into respectively, 2 square jigsaw using 4 right-angle triangle jigsaw (5) and 6 isosceles triangle jigsaw (4) to be combined into respectively, more than 6 square jigsaw can be combined into 1 square.The periphery of each jigsaw is with coloured plastic magnetic material embedding limit.Each jigsaw is made with transparent hard material.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is polyhedron teaching jigsaw stretch-out view, the square that Fig. 2 risks for polyhedron teaching jigsaw, the positive rectangular pyramid that Fig. 3 risks for polyhedron teaching jigsaw.1 square jigsaw, 2 isosceles trapezoid jigsaw, 3 rectangle jigsaw, 4 isosceles triangle jigsaw, 5 right-angle triangle jigsaw.

As Fig. 2, the square that is combined into whole jigsaw by the teaching requirement, constitutes multiple positive right prism after can pulling down the part jigsaw, and oblique prism and terrace with edge as Fig. 3, can be combined into square shown in Figure 2 one positive rectangular pyramid.In addition, 6 isosceles triangle jigsaw can be combined into positive triangular pyramid, positive rectangular pyramid, positive pentagonal pyramid and positive hexagonal pyramid.Therefrom make the student set up the polyhedral notion of solid geometry intuitively, grasp the calculating of surface area and volume, to development student's logical thinking ability, space imagining ability and problem analysis, problem-solving ability will play help preferably.

Claims

1. polyhedron teaching jigsaw, it is characterized in that: a square floor (1) is arranged, 1 square jigsaw that the square jigsaw of 2 block lengths (3) is combined into, 2 square jigsaw using 4 right-angle triangle jigsaw (5) and 2 isosceles trapezoid jigsaw (2) to be combined into respectively, 2 square jigsaw using 4 right-angle triangle jigsaw (5) and 6 isosceles triangle jigsaw (4) to be combined into respectively, more than 6 square jigsaw can be combined into 1 square.

2. polyhedron according to claim 1 teaching jigsaw is characterized in that: the periphery of each jigsaw is with coloured plastic magnetic material embedding limit.

3. polyhedron teaching jigsaw according to claim 1, it is characterized in that: each jigsaw is made with transparent hard material.