BUILDING A BALLOON ROCKET

In K5 Science we have built a balloon rocket. We’ve had so much fun! Here are the instructions:
-Thread one end of the string through the straw
-Tie each end of the string between two solid supports such as a chair, table leg or door knob, making sure it is strung tightly.
-Blow up the balloon but do not tie it.
-Holding the opening of the balloon closed with your fingers, tape one side of the balloon to the straw so that it hangs horizontally below the string.
-Get ready for launch and let the end of the balloon go. Watch as the air escapes and sends your balloon rocketing across the string track!
READY STEADY GO,