Water Rocket: The combination of water, compressed air, and a plastic soda bottle serves as a great source of propulsion for a water rocket. Alternate way (without tape) to fix up those water bottle rockets. by elsa
faire un labyrinthe avec des pailles / Kid-Made DIY Recycled Cardboard Marble Maze. Fun recycled project from start to finish that gets kids tinkering, building and proud of making their own handmade toy.