The Last Day of Robotics
Anyway, today's challenge was to create a robot that would hold a plastic cube, drive from one line to another, and shoot the cube forward from just before the second line. I promised ice cream to whichever team threw the cube farthest past the line, while meeting all the requirements of the challenge. Later, when catapult after catapult fell apart during the throw, I added that the robot had to be able to complete the challenge successfully three times in a row with no intervening repairs.
Both teams completed the challenge, with two entirely different designs. One group finished really early and just played for the end of the period, while the other group - which was really a pair by then - worked feverishly right up to the last minute. Tomorrow, they're all meeting me after school and I'm buying ice creams for the whole team from the truck that pulls up outside the doors when school lets out.