Lewis and Clark, a New Frontier--In this guide for the 5-8th grade that includes puzzles, projects, and essay writing opportunities, students will learn how the Corps of Discovery Expedition, commissioned by President Thomas Jefferson, and led by Lewis & Clark, traveled west to discover the land of the Louisiana Purchase. How was the land of the Louisiana Purchase explored? What were these explorers hoping to find? Included are activities about the Native American tribes they met and the c