This fun online kids game is a free internet version of the classic spirograph pattern-making toy.
How to use Spiro Online
Different patterns are obtained by setting different values for the fixed circle radius, the moving circle radius, and the moving circle offset. The first three scroll bars in the control panel let you set these values in the range 1 to 100.
You can use the next three scroll bars to change the color of the drawing. These scroll bars change the red, green and blue values of the color respectively (in the range 0-255).
The last scroll bar lets you choose the number of iterations.
You can use the Random button to select random values for the radii and color. The number of iterations is not changed by the Random button.
If none of this makes any sense to you, don't worry. Just play with the sliders, see what effects you get, and have fun!