Tools of Timekeeping
A Kid's Guide to the History & Science of Telling TimeBook - 2005
Describes the history and technology of the methods people have used to measure time, and provides 15 activities designed to improve one's awareness of the complexity of timekeeping.
Publisher: White River Junction, Vt. : Nomad Press ; Chicago : [Distributed by] Independent Publishers Group, c2005
Characteristics: 137 : ill., maps ; 26 cm