Teach your students about the invention of the submarine and its impact on the history of the world. This activity will help your students understand the physics of a submarine and how it has been use in war, espionage, and scientific research.
Excerpted from
The 20th Century
This comprehensive book presents highlights of each decade from the 1900s to the 1990s. It examines the political, economic, social, cultural, scientific, and technological advances of the twentieth century and introduces students to the individuals who made history in each decade.