Chemistry
www.leapfrog.com Code: SS96.03 ? 2002 LeapFrog, Inc. All Rights Reserved. Page 1 of 3 Social Studies Silver Burdett Ginn Our Country Chapter 3 The First Americans OVERVIEW This chapter discusses how the first settlers came to the Americas. It also describes the lifestyle of the Native Americans and the civilizations of the Mayas, the Aztecs, and the Incas. KEY TERMS ? archaeologist: scientist who studies ancient civilizations through artifacts ? artifact: remnants from the past left behind by earlier inhabitants ? causeway: road that is raised above water to connect two pieces of land ? desert: dry region with almost no vegetation ? empire: group of countries ruled by an emperor ? environment: surrounding