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Slingshot Cart
Children build a cart powered by a rubber band slingshot. Pulling and releasing the band sets the cart in motion—demonstrating stored energy and force in action with added fun.
Materials :
- Card Board
- Masking Tape
- Bottle Cap
- Straw
- Sausage Stick
- Scissor
- Paper Cup
- Pebbles
- Rubber
- Double Side Tape (Thick)
Challenges:
- Design your own car with more or fewer wheels. You can try one with 3 wheels, 4 wheels, or even more. Add some weight to your car and see how kids work to hold the weight in it.
- Try using more or fewer rubber bands and see how it affects the speed.
- Let the kids estimate how far the cart will travel, and then you can use a measuring tape.
- Make an obstacle or block its way using paper cup towers or loops and see if the cart can pass through it.
- You can create a path that runs upward to a certain height using cardboards and see if the cart could travel across it.
Questions to be asked:
- Why do you think the car goes fast?
- What happens if we use a bigger/more number of rubber bands?
- Do you think adding or removing wheels of this cart brings any changes to the cart?
- How far do you think your car will go if you pull the rubber band really far?
- What kind of track would you want for your car to race on?
- Why not a curved path? And if you had a curved path, how would you make your car work?