Sheldon finds out that the new chemical elements he helped discover were found because of a mathematical error; he was off by a factor of 10,000. He feels that he is a fraud as a result.

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.

A trip to the local clock shop reminds everyone in Huckle's class how important clocks are for our everyday lives.

Beakman explains time, how it's measured, and how clocks work. He explains the history of clocks and how we got to quartz clocks today.

Cintronella Jones catches a man making counterfeit meter sticks and arrests him because he is violating measurement standards. Later, a girl indicates that a meter is standardized across different countries in the world and even on the moon.