9. Marble Run Engineering
Using cardboard tubes, paper cups, and tape, kids can build a marble run that explores gravity, momentum, and problem-solving. They can challenge themselves to create the longest or most complex path.
Why it works:
- Introduces engineering and physics
- Encourages planning and creativity
- Great for teamwork or solo play
Tip: Color-code the tubes and pathways to make the marble run visually appealing.
