Height and shadow length research instrument convenient to adjust

Abstract

The invention discloses a height and shadow length research instrument convenient to adjust, and belongs to the technical field of teaching aids, the height and shadow length research instrument comprises a base, the left side of the top of the base is movably connected with a fixed seat, a first movable pipe is clamped in an inner cavity of the fixed seat, and a second movable pipe is clamped in an inner cavity of the first movable pipe; through cooperation of the first movable pipe, the second movable pipe and the movable rod, the telescopic rod is formed, through cooperation of the second scale marks, the height of the movable rod can be conveniently adjusted, and the shadow of the movable rod is projected to the base below through the light source; the shadow length of the movable rod is recorded according to the first scale marks at the tops of the first movable plate, the second movable plate, the third movable plate and the fourth movable plate, then the relation between the height and the shadow length is researched through data, meanwhile, all the components of the device are detachable and convenient to disassemble and assemble, the space occupation ratio is reduced, and the research instrument is convenient to adjust.

Description

technical field [0001] The invention relates to the technical field of teaching equipment, in particular to an adjustable height and shadow length research instrument. Background technique [0002] Teaching equipment is a general term for all kinds of equipment used to enable students to understand the teaching content intuitively and visually, as well as the equipment used by teachers in teaching. Teaching aids for short. Teaching aids can improve students' interest in learning, enrich perceptual knowledge, help form clear concepts, and develop students' observation and thinking abilities. It is generally divided into three categories: ordinary teaching aids, special teaching aids, and children's teaching aids. [0003] In order to better demonstrate the relationship between height and shadow length, the teacher usually uses the height and shadow length research instrument for demonstration, which is convenient for students to understand more intuitively. The traditional ...

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Problems solved by technology

[0003] In order to better demonstrate the relationship between height and shadow length, the teacher usually uses the height and shadow length research instrument for demonstration, which is convenient for students to understand more intuitively. The traditional research instrument uses objects of fixed length and height for demonstration. It is very inconvenient during the presentation and demonstration, too many distracting items, it is easy to mislead the students and reduce the enthusiasm of the students

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