Return to Unit List Grade 6   Unit F: Motion, Work, and Machines     Chapter 12: Objects in Motion   Lesson 1: Speed and Distance   Summary   Quiz   Lesson 2: Forces and Motion   National Geographic: Inertia: An Idea in Motion   Summary   Quiz   Lesson 3: Acceleration and Momentum   National Geographic: Traveling in the 21st Century   Summary   Quiz   Research Report: Forces and Motion   Chapter 12: Links Chapter 13: Work and Machines   Lesson 4: Energy and Work   National Geographic: Can Car Crashes Be Safer?   Summary   Quiz   Lesson 5: How Levers Work   Summary   Quiz   Lesson 6: How Inclined Planes Work   Summary   Quiz   Chapter 13: Links   People in Science/Careers