Triangular pyramid teaching aid

Abstract

The invention discloses a triangular pyramid teaching aid, which belongs to the technical field of teaching aids and is characterized in that the bottom surface of a triangular pyramid is arranged on a bearing bottom plate; the X axis and the Y axis of the space rectangular coordinate axis are arranged on the bearing bottom plate, the Z axis is perpendicular to the bearing bottom plate, and the X axis, the Y axis and the Z axis intersect at the original point of the coordinate axis; a laser pen is arranged at the original point of the coordinate axis and is positioned in the triangular pyramid; the aerosol sprayer and the bridge direct-current power supply are arranged on the bearing bottom plate; resistors are arranged in the edges of the triangular pyramid and are electrically connected in a triangular manner; two ends of the resistor in one edge of the bottom surface of the triangular pyramid are electrically connected with positive and negative ends of a bridge direct-current power supply respectively; a small ball capable of moving along the triangular pyramid is arranged in the other edge of the bottom surface of the triangular pyramid; the small ball is connected with the vertex of the triangular pyramid; and another laser pen is arranged at the vertex of the triangular pyramid. According to the invention, teaching ideas of solid geometry, physics and chemistry are integrated.

Description

technical field [0001] The invention relates to the technical field of teaching aids, in particular to a triangular pyramid teaching aid. Background technique [0002] In the teaching process of three-dimensional geometry triangular pyramid, it is difficult to understand the distance from the end point of the triangular pyramid to other points, lines and surfaces inside the triangular pyramid. Traditional teaching generally adopts drawing plan and constructing auxiliary lines. This method is relatively abstract and requires students to have a strong sense of three-dimensional space and imagination. If a kind of teaching aid can be used to solve the above problems, it will be easier for students to establish a sense of three-dimensional space, thereby improving the teaching quality and effect. In the process of physics teaching, the equivalent transformation of traditional circuits is carried out on the plane, and there are unfamiliarity and understanding of the series-para...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of difficulty in understanding relevant knowledge points in the teaching process of three-dimensional geometry triangular pyramids, physics and chemistry, the present invention provides a triangular pyramid teaching aid, including a bearing base plate, an aerosol sprayer, a space rectangular coordinate axis, a triangular pyramid, and a first laser Pen, the second laser pointer, bridge DC power supply and resistance; the bottom surface of the triangular pyramid is arranged on the bearing base plate; the space Cartesian coordinate axes include X-axis, Y-axis and Z-axis, and the X-axis and Y-axis Set on the bearing base, the Z-axis is perpendicular to the bearing base, the X-axis, Y-axis and Z-axis intersect at the origin of the coordinate axes; the origin of the coordinate axes is provided with the first freely rotatable A laser pointer, and the first laser pointer is located inside the triangular pyramid; the aerosol sprayer and the bridge DC power supply are all arranged on the carrier base; all three edges of any plane of the triangular pyramid There is the resistor, and the resistor is electrically connected in a triangular manner; the two ends of the resistor in one edge of the bottom of the triangular pyramid are respectively electrically connected to the positive and negative terminals of the DC power supply of the electric bridge; the bottom of the triangular pyramid A small ball that can move along it is arranged in the other edge, and the small ball is connected with the apex of the triangular pyramid; the apex of the triangular pyramid is provided with the second laser pointer that can rotate freely

Images