If casually dropping an Isaac Newton reference while conversing with your kids earns you a blank look or a poorly concealed groan, you may need a new approach. Forget the bit about apples falling on his head and don't get into how he invented calculus. Instead, ask them if they want to build a small rocket, powered by Alka-Seltzers. That should get their attention.
This fun little science project from Howtoons is one that anyone can make with just a few household items. By using the reaction that occurs when an Alka-Seltzer tablet comes into contact with water as the propulsion system, this rocket is a safe way to initiate a riveting discussion on Newton's Third Law of Motion.
And if you never quite get around to the scientific discussion, at the least you'll have a lot of fun shooting these things into the air.
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