How to draw the math festival badge?

The drawing method of the math section badge is as follows:

1. Draw the shape of the badge on white paper with a pencil. You can choose round and square shapes.

2. Draw a mathematical symbol in the center of the badge, such as addition, subtraction, multiplication and division, π, radical sign, etc.

3. Draw some mathematical figures on the edge of the badge, such as triangle, square, circle, trapezoid, etc.

4. Color the badge with a colored pen or brush. Colors can be selected according to your own preferences, or colors related to mathematics, such as blue, green and purple.