Squeak Etoys is a "media authoring tool"-- software that you can download to your computer
and then use to create your own media. You can write out your project and share it with others.
Etoys runs on any Mac or Windows machine, as well as on the OLPC XO machine.
It is free.
Find out about Etoys.
Text of this guide (for searching): Click the green clock to start and stop the script. Script Tile: Heading. Draw an overhead view of a bug so it will move straight up on the screen with a forward by 5 script. Add a heading tile to your script by dragging the tile by its white 'assignment' arrow.
Change the heading numbers to change the direction of flight. There are headings for every point of the compass; try many points.