Dihedral angle teaching device

A teaching device and the technology of dihedral angles, applied in the field of teaching aids, can solve problems such as inability to grasp, incomprehension of students, and lack of teaching aids, etc., and achieve the effect of easy grasp, intuitive phenomenon and easy acceptance

Inactive Publication Date: 2016-07-13
周维保
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Dihedral angle is an important teaching content in middle school geometry class, but there are no ready-made teaching aids in the teaching aid market, and the sub-part of technical teaching can only be solved by oral explanation and drawing. Can't understand, can't grasp, with the present invention, all problems can be easily solved

Method used

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  • Dihedral angle teaching device

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Embodiment Construction

[0009] Further illustrate the present invention below in conjunction with embodiment and accompanying drawing, refer to appendix figure 1 ,

[0010] The invention consists of a base plate (1) and two sheet plates (2). A circular rolling groove is arranged on the base plate, and arc scale numbers are attached around the circular rolling groove. There is a fixed shaft at the center of the circular rolling groove to connect one side of the two plates together to form a dihedral angle. A ball (3) is attached to a corner of the two plates, the ball is firmly embedded in the groove of the circular rolling groove, and can only slide in the groove without leaving the groove.

[0011] The positive effect of the present invention is: use it to teach content such as the formation of dihedral angle, the nature of dihedral angle, the function of dihedral angle, etc., the phenomenon is intuitive, and students are easy to accept and master.

[0012] Using it can enable teachers to achieve...

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Abstract

A dihedral angle teaching device is composed of a base plate (1) and two flaky plates (2). The base plate is provided with a circular rolling groove, and the periphery of the circular rolling groove is provided with scale numbers of an arc; the circle center of the circular rolling groove is provided with a fixed shaft which connects one edge of one flaky plate with one edge of the other flaky plate together to form a dihedral angle; the corner of each flaky plate is provided with a rolling ball (3), and the rolling balls are steadily embedded into a groove ditch of the circular rolling groove, only can slide in the groove ditch and cannot leave the groove ditch. The dihedral angle teaching device has the advantages that content such as formation of the dihedral angle, the properties of the dihedral angle and the action of the dihedral angle is taught through the device, the phenomena are straightforward, and students can easily accept and master the content; a teacher can achieve the teaching effect of getting twice the result with half the effort.

Description

technical field [0001] The invention relates to teaching tools, in particular to a teaching device for dihedral angles. Background technique [0002] Dihedral angle is an important teaching content in middle school geometry class, but there are no ready-made teaching aids in the teaching aid market, and the sub-part of technical teaching can only be solved by oral explanation and drawing. Can't understand, can't grasp, have had the present invention, all problems are readily solved. Contents of the invention [0003] The purpose of the present invention is to provide a kind of teaching aid with obvious effect of teaching dihedral angles for middle school mathematics teachers. [0004] The above purpose is achieved through the following schemes, [0005] The invention consists of a base plate (1) and two sheet plates (2). A circular rolling groove is arranged on the base plate, and arc scale numbers are attached around the circular rolling groove. There is a fixed sha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/04
CPCG09B23/04
Inventor 周维保
Owner 周维保
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