Experimenting with Time

By Robert Gardner

Long ago, people thought time flowed from the movement of the Sun, moon, and other astronomical bodies. Today, scientists think of time as the fourth dimension. What exactly is time? Going back in time, Mr. Gardner tells the history of timekeeping. Primitive people measured time according to the position of the Sun, the moon, and the stars. You can see for yourself how different calendars evolved.

• Format: Hardcover
• Language: English
• ISBN: 0531125548
• ISBN13: 9780531125540
• Release Date: January 1766
• Publisher: Franklin Watts
• Length: 160 Pages
• Weight: 1.15 lbs.
• Dimensions: 0.7" x 6.3" x 9.3"
• Age Range: 12 to 17 years
• Grade Range: Grades 7 to 12