How to Make a Water Rocket With Your Kid
by Stephen Johnson on Offspring, shared by Stephen Jo from Lifehacker on (#3X59A)
If you haven't built and launched water rockets with your kid, you're missing out on an awesome project. With 10 bucks or so worth of parts, an air pump, and an empty soda bottle or two, you can have a blast of an afternoon and learn some elementary rocketry. Even the most jaded kid will be blown away by the sheer"