In Natural Forces and the Laws of Motion students are introduced to natural forces and the laws of motion.Lessons include the following: Defining Force and Mass (Investigation: Force and Spaghetti, Fact Sheet), Gravity (Investigation: Center of Mass), Systems of Mass and Weight (Gathering and Interpreting Data & Key), Friction (Investigation: Using a Spring Scale), Other Forces (Fact Sheet), Assessment (Worksheet/Research & Key), Basics of Motion-Displacement and Distance, Measuring Moti