April 2, 2013
Tubes in the shape of half a circle can be used for whisper tubes.
Twist them so long side is next to short and you can see through them.
Make slides for blocks and balls.
Program a RCX to take sound level readings.
Different tube shapes give different data.
Bouncing the ball looks like bouncing a ball.
After school the younger ones made marble tracks.
Then the bigger kids got to come see and play with it.
