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Whirl & Soar

Whirl & Soar

Do them both with these inexpensive kits from the Science for Kids company. You pick from the pop rocket kit, a 3" long x 1-1/4" dia plastic rocket with sodium bicarb pellets (Alka-Seltzer works too) for power, which won't get to the moon but will fly over 10 feet; and the hurricane tube kit, with the double-threaded adapter that turns two standard soda bottles that you supply into the ever-popular water vortex experiment, with food coloring to make it prettier.

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