1 first of all, we need a piece of colored cardboard (colored cardboard is more beautiful, the paper is better, and the ruler has a longer service life. You can use other paper, any paper will do, but the aesthetics and service life will be lower.

2. After folding, fold it into the shape of a ruler. You can fold it several times, preferably three times. After three times, you can ensure the thickness of the ruler without affecting the accuracy of the ruler.

You can get the prototype of the ruler after folding, but there is nothing on it. At this time, we can draw a dividing line to separate the ruler scale from the dividing line below.

4. Then comes the drawing of scale, which is also the most difficult and important. Biyi ruler is used for measurement. At this time, we can aim at the side where we want to draw the scale with a ruler, and then draw the scale with a pen. )

5. After the characterization is completed, it depends on the appearance of the ruler. At this time, we fill in the scale and a ruler can finish it.

use

In mathematics teaching, wooden folding ruler can be used to easily form various teaching aid models such as plane graphics and three-dimensional graphics, and some mathematics teaching demonstrations can be carried out for intuitive teaching. Clever use of wooden folding ruler, multi-purpose, convenient and practical, economical and practical.

For example, wooden folding ruler is used to form various plane figures, and in teaching, wooden folding ruler is used to form polygons such as square, rectangle, trapezoid, triangle, diamond, regular pentagon, regular hexagon, regular heptagon and regular octagon.