Balloon Rocket

How we did it:
Materials List
- string
- balloon
- straw - wide
- tape
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Cut a long piece of string, several feet long. This will act as your track for the launch. Thread the string through a wide straw, cut to 4" long.
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Find an open area to tie or tape the two ends of the string. We found a good spot outside between trees, but you can also tie the string to two chairs inside.
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Blow up the balloon and pinch the opening to keep the air inside. Use tape the secure the balloon to the straw.
Tip: You may need another pair of hands to complete this step -
From one end of the string, let go of the balloon and watch it zoom across!