Multifunctional mathematical ruler for mathematical education

Abstract

The invention provides a multifunctional mathematical ruler for mathematical education. The multifunctional mathematical ruler comprises a first ruler body and a second ruler body. A connection clamping plate A is fixedly connected to the rear end of the first ruler body. A connection clamping plate B is fixedly connected to the rear end of the second ruler body, and the connection clamping plateA and the connection clamping plate B are rotationally connected. The bottom sides of the front ends of the first ruler body and the second ruler body are each provided with a clamping table, and sliding rulers are slidably installed in the clamping tables. Transverse sliding adjustment grooves are formed in the upper sides of the clamping tables, and notch grooves are formed in the inner side ends of the clamping tables. Adjusting columns are connected to the middles of the sliding rulers and upwards penetrate out of the transverse sliding adjustment grooves, and position clamping is conducted through limiting blocks. An angle measuring plate is installed on the inner side of a convex clamping groove. The sliding rulers can be drawn out from the front end of the first ruler body or the second ruler body, the length of the first ruler body and the second ruler body is extended, after the first ruler body and the second ruler body are unfolded by 180 degrees, the sliding rulers can alsobe rotated outwards by 90 degrees correspondingly to form an I-shaped ruler, and thus the I-shaped ruler can be used in the transverse direction and the vertical direction simultaneously.

Description

technical field [0001] The invention belongs to the technical field of teaching rulers, and more specifically relates to a multifunctional mathematical ruler for mathematics teaching. Background technique [0002] In the teaching process, teachers usually need to write and draw pictures on the blackboard; the words are written directly with chalk, and the pictures need to be drawn with tools. The general drawing tools include: ruler, set square and protractor. There are angles, which can measure angles, and can also draw arcs, circles, and straight lines; rulers can draw straight lines; right-angled triangles and straight lines can be drawn. [0003] For example, in the invention patent with the application number: CN201310554738.8, a teaching ruler is disclosed, which is a protractor as a whole. The angle between the side and the straight line side of the teaching ruler is 45 degrees; the third side and the fourth side of the through hole intersect to form a second right a...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the present invention provides a multifunctional mathematical ruler for mathematics teaching, to solve the problem that its length is often limited, and there is also a telescopic structure in the teaching ruler, but it is limited to telescopic, and cannot be rotated after stretching , cannot be used horizontally and vertically at the same time, and the protractor structure is mostly fixedly connected with the teaching ruler. In use, it is often necessary to rotate or move the teaching ruler

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