How to make a model tether ball court

Here is what you need to make a tether ball court:
1. A flat surface, black or white, you have to be able to draw on it.
2. A tens rod.
3. A rubber band, silly band, or string.
4. A little ball.
5. Tape.

First, break the silly or rubber band and tape it to the rod or if you have a string, just tape it to the rod. Then put the tens rod on the flat surface and tape it.  Third, make sure your string is 7, 8 or 9 units long.  Fourth, draw a line using both sides of the tens rod and string. Then you draw a circle around the tether ball court. You are done.