Multi-element teaching aid device

Abstract

The invention discloses a multi-element teaching aid device which comprises a straight triangular ruler teaching aid and a protractor teaching aid; the protractor teaching aid is fixedly connected toa long right-angle edge of the straight triangular ruler teaching aid through a rotating hinge; the long right-angle edge is provided with length scale lines; the center of the protractor teaching aidis provided with an arc-shaped bulge; an auxiliary ruler is hinged to the arc-shaped bulge through a first pin shaft; an oblique edge of the straight triangular ruler teaching aid is provided with arotating rod; the rotating rod is hinged to the oblique edge through a second pin shaft; the straight triangular ruler teaching aid is internally provided with a regular pentagon, a regular hexagon, an oval and a gradienter; and the gradienter and the long right-angle edge are of a parallel structure. The multi-element teaching aid device is reasonable in structural design, is capable of being used as a ruler, measuring an angle and drawing angles with various angles and circles, has multiple purposes with one ruler, improves the teaching efficiency and is convenient and rapid to use, strong in practicability and liable in popularization and use.

Description

technical field [0001] The invention relates to the technical field of teaching aids, in particular to a multi-element teaching aid device. Background technique [0002] Mathematics teaching aids can be involved in both kindergartens and universities. At present, most of the mathematics teaching aids we use are relatively simple. Every time you need to bring a lot of teaching aids, because there are too many teaching aids, many teachers will forget to bring them, or forget some of the teaching aids, which makes it extremely inconvenient to use, and so many teaching aids teachers It is not easy to take it alone, which brings a lot of trouble to every teacher. [0003] At present, in mathematics teaching from kindergarten to university, commonly used mathematics teaching tools include right-angled triangles, protractors, etc. With the above-mentioned conventional mathematical teaching aids, only straight lines, acute angles, obtuse angles, and right triangles can be drawn. I...

AI Technical Summary

Problems solved by technology

With the above-mentioned conventional mathematical teaching aids, only straight lines, acute angles, obtuse angles, and right triangles can be drawn. If figures such as circles with known radii, regular pentagons, regular hexagons, and ellipses are drawn, they can only be drawn by hand. It brings inconvenience to mathematics teaching; moreover, in the process of mathematics teaching, teachers often use teaching aids to draw on the blackboard, especially in the demonstration process of geometric drawing, they will use teaching aids such as triangular ruler, compass and protractor. It is relatively scattered and needs to be replaced back and forth when drawing, which wastes valuable teaching time and greatly increases the workload of teachers. At the same time, in the process of mathematics teaching, teachers need to draw many horizontal and vertical lines on the blackboard. Special calibration equipment, so it can only be judged by your visual inspection, so the horizontal and vertical lines drawn are not standard

Images