Mathematical teaching tool convenient for drawing

Abstract

The invention discloses a mathematical teaching tool convenient for drawing. The mathematical teaching tool comprises a circular ring body, a support, a motor, a rotating disc, a telescopic arm and aclamp, wherein the motor is fixed to the side surface of the circular ring body through the support, a rotating shaft of the motor is opposite to the circle center of the circular ring body, and the circle center of the rotating disc is fixedly connected with the rotating shaft of the motor; one end of the telescopic arm is connected with the side wall of the rotating disc, and the clamp is arranged at the other end of the telescopic arm and is used for clamping a chalk; and the motor drives the rotating disc to rotate and enable the telescopic arm to rotate, so that the chalk on the clamp candraw a circle on the blackboard. According to the mathematical teaching tool, the protection of a blackboard is improved, meanwhile, the quality of a graph is improved, the drawing time is shortened,and the teaching efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of mathematics teaching aids, in particular to a mathematics teaching tool convenient for drawing. Background technique [0002] In the long-term teaching, chalk and teaching utensils are always necessary supplies, even with the development of information technology and the continuous popularization of multimedia teaching. However, in the process of mathematics teaching, the courseware prepared in advance cannot always meet the needs of students and teachers. For example, during disassembly analysis, the teacher needs to use chalk to draw graphics that are not in the teaching courseware on the blackboard. At this time, drawing tools are needed to assist the teacher to complete the drawing. In addition, some teachers are not used to multimedia teaching, and still use chalk, ruler, compasses, etc. to draw pictures according to the actual teaching content, and avoid teaching according to courseware. [0003] ...

AI Technical Summary

Problems solved by technology

There are deficiencies in this traditional compasses: 1. The sharp needles pierce the outer surface of the blackboard, destroying the integrity of the blackboard, and the holes caused affect the writing of chalk

2. When drawing a circle, it is easy to break the chalk with uneven force, and it is not easy to coincide with the original track after replacing the new chalk, forming multiple circles, resulting in uneven lines of the graph, which greatly reduces the quality of the graph

3. For female teachers with less strength, the traditional compasses are large in size and very inconvenient to operate, so their usage rate is not high, and drawing circles by hand further leads to a decline in the quality of graphics

The inconvenient drawing will also lead to long drawing time and delay of class hours

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