Cardboard marble run
Tape ramps to a wall. Each ramp drops to the next. The marble has to land in a cup at the bottom.
yrs: 6-14
Plays in: 60 min
Outz on completion: 9
Materials: cardboard, tape, scissors, marbles
How to make it
Cut strips of cardboard ~30cm long. Fold a small lip up the long edge to make a U-channel. Tape ramps to a wall in a zig-zag, each one tilted slightly downward. The bottom one should land in a cup. Test, adjust, re-test. The build is the game.