| Condition: | New |
|---|---|
| Customized: | Customized |
| Certification: | ISO9001 |
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Angle operation materials math teaching
Product Introduction
The product is made of plastic, with an angle indicator (including connecting rod) connected with 2 elongated plastic rods with a chute, and the length of both sides can be stretched and contracted.
Product Specification
| Product name | Angle operation materials |
| Material | plastic |
| Size | 80x20x6mm |
Instructions
(1) Preliminary understanding of angles: Observe the composition of angles: there are vertices and two sides.
(2) Adjust the size of the opening on both sides of the angle. It is found that the larger the opening of the two sides, the larger the angle. On the contrary, the smaller the opening, the smaller the angle.
(3) After adjusting the opening angle on both sides of the corner, lengthen or shorten the length of the two sides of the corner, and find that the size of the corner has not changed, so the size of the corner has nothing to do with the length of the side.
(4) Let the students observe the upper corners of the triangular board (self-provided) and find that there are two identical angles on the two triangular boards and both sides are vertical. This is called a right angle. By changing the angle size on the angle operation material, it can be found that the angle can have Angles larger than right angles and angles smaller than right angles can be summed up in combination with teaching materials: angles smaller than right angles are called acute angles, angles larger than right angles are obtuse angles, and the magnitudes of right angles are all the same.
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