Museum of Science
Museum of Science and Industry Chicago: Online Science: Drop Eggs Into Cups
Step-by-step illustrated instructions showing how to drop four eggs into four cups without touching them. Demonstrates the concept of inertia according to Newton's first law of motion.
CK-12 Foundation
Ck 12: Physical Science: Inertia
[Free Registration/Login may be required to access all resource tools.] Explains inertia and how it affects motion, the relationship between inertia and mass, and how to overcome inertia.