geodesy

Examines the history and science of navigation from coastal piloting to GPS.

"The division of the Earth into hemispheres isn't the easiest concept to teach or grasp. It involves geography, spatial awareness, map-reading abilities, and more. This volume makes it easy for any reader to develop a solid comprehension of this critical social studies lesson! Vivid, full-color maps and photographs are integrated with accessible main text to aid young readers understanding of this sometimes tough topic"--Amazon.com.

Demonstrates methods for calculating the perimeters and areas of square and rectangles by exploring the ancient Mexican city of Teotihuacan.

Describes the Geodesic Mission to the Equator--the first international, cooperative scientific expedition to determine the shape of the earth in the eighteenth century. Discusses the characters present, the challenges they faced, and the military and economic stakes involved.