Here’s another balloon post for you, except this time on a much smaller scale! We’ve done this several times since I saw this idea in a few of our many science experiment books. The boys love it and never seem to tire of it being the fun indoor activity that I reach for when I need to get something done in the kitchen and want to have them nearby, like on a ‘bickering day’. It’s really quite simple!
Take a piece of yarn and thread it through a straw.
Tie the yarn to a doorknob across the room.
Tape the straw onto a balloon that is full of air, making sure to pinch the balloon closed so it doesn’t shrink while you are taping. This step is a good one for working together as a team, otherwise you’ve got to have a lot of coordination!
Hold the string tight and let go of the balloon!
What happens? Does the balloon go fast or slowly? What happens if you don’t blow the balloon up quite so much? What happens if you forget to use tape? What other observations can you make?
I tried many times to get a picture of this and it comes out blurry every time. I can’t even manage one of either of them simply holding the yarn as they are so giddy with excitement to watch the balloon rocket take off!
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