Create a cotton ball launcher with stuff from around the house: Some cardboard tubes, a pencil or popsicle stick, and some rubber bands. You’ll need some strong tape, scissors, and a hole punch put it all together.
This simple Science Buddies video demonstrates how to assemble this fun cotton or bouncy ball launcher, an exploration of potential energy, kinetic energy, and conservation of energy.
Try more DIY cardboard projects with these videos: DIY Solar Oven, how to make a coin sorting machine with cardboard, and how to make a giant ‘robotic’ cardboard hand.
We also like the book Build Your Own Chain Reaction Machines: How to Make Crazy Contraptions Using Everyday Stuff–Creative Kid-Powered Projects and Recipes for Wonder: Adventures in Science Round the Kitchen Table.
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