Ever wondered how that windows screensaver worked? Play with this Imagine Logo activity, and let the turtles show you exactly how...

Press the 'Go' button to get started. Then click anywhere on the page to add another point to the curve.

Click the 'Remove a point' to remove a point from the curve.

Click 'Show' to show the turtles positions and headings. Drag the speed slider to speed up or slow down the turtles.

Good luck..