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): Halo Tools: Make a Tile Representing This Object
The Halo's Tile handle lets you assign properties or behaviors of one
object to another one. Draw one object and open a Viewer
for it.
Draw another object; open its Viewer too. Make a script like this for one object.
Change the word dot by getting a tile from the other object's halo.
Change dot in both places in the script. Click the green clock to start the script.