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Balloon Cart

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Balloon Cart


Children build a cart using balloons, straws, and bottle caps. As air escapes from the balloon, the cart rolls forward—introducing the concept of motion and force through fun.



Materials :
  • Card Board
  • Masking Tape
  • Bottle Cap
  • Balloon
  • Straw
  • Sausage Stick
  • Scissor
  • Paper Cup
  • Pebbles

Challenges:


  1. Ask them to make a car with an odd number of wheels, like 3 or 5.
  2. Attach cups with a load and let it travel a certain distance.
  3. Get more than one balloon attached and try with each balloon going in a different direction.
  4. Let the kids estimate how far the cart will travel, then use a measuring tape to check.

Questions to be asked:


  1. Does your balloon cart go slower when you put more load on it?
  2. And do real cars slow down when they have more stuff in them? Why or why not?
  3. Does putting two or more balloons on your cart change anything?
  4. Do you think vehicles with an odd number of wheels would work well? Can you compare between yours and a real one?

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