Curated OER
Astronomy: Picture Time
Young scholars investigate how to tell time by observing the placement of objects in the sky. Researching on the Internet, they locate the time for sunrise and sunset, the time the full moon rises, and the difference between clock and...
Science Buddies
Science Buddies: A Matter of Time
Do you wake up at the crack of dawn, or do you need an alarm clock to wake you up each morning? It may surprise you that the two are not always in synch. Nowadays, we use Standard Time to set our watches instead of Solar Time. Which...