Have 3 bots "talk" to each other.
One sends mail message 1 to another. It plays one note and sends
mail message 2 to the next RCX bot.
That one plays 2 notes and sends mail message 3 to the first. It plays
3 notes and everything starts again.
The first half of the group checked out
http://netapps.marshall.edu/lego/lessonplans/RCXtoRCX.html then made plans.
They finished the programs for the first and second RCX.
Then they went back in their class room to expain the project to the
second half.
They worked out the program for the last bot and check everything out.
Then the second half of the group demonstrated how the programs all
worked together.
