Before technology and maps there were boats and explorers. Lewis and Clark led the Corps of Discovery through previously unmapped lands in the west of the United States. With the help of Sacagawea and other Native American communities of the area, they helped further exploration of newly acquired territory. Learn about this exploration with easy-to-understand content tied to the curriculum of upper-elementary and middle school students written at a 2nd to 3rd grade reading level. Dyslexia-friendly font and design make learning accessible and a recap at the end promotes checking for understanding that aids comprehension. It's key U.S. history curriculum made approachable for all.