The CyberSquad needs to balance the scale using two weights in order to access the machine that will save Sensible Flats from disaster. After some time, they figure out the two equal weights to use and save Sensible Flats just in time.
Inez and Digit need to balance the scale with four numbers and gain access to the machine in order to save the bunnies from the dangerous cyberstatic. They balance five numbers with ease but realize they can balance only four numbers. They learn that removing the same weight from each side does not affect the balance of the scale.
Bill introduces the ancestor of the modern clock: the sundial. He illustrates how it uses shadows to indicate the time of day and explains how it influenced the clock. A time lapse then shows how the sundial and clock are in sync as the hours go by during the day.