2. Simple production
1
Design intent
When talking about ruler drawing, in order to make the drawing steps more standardized and the effect more accurate, it is easy for students to accept and understand; And can draw accurately.
2
Design steps
First, take a piece of chalk (the color can be selected according to the situation), open it from the middle and take its upper part; Then prepare a slightly longer thin line, wrap it in the middle of the selected chalk, and drag it hard; Finally, the thread is tied tightly to make it a whole, and a "simple compass" is made.