Transform any bare wall or door into a roller coaster marble run! Children will observe and absorb the basic laws of physics and gravity as they set up the different pieces and see what happens when they drop the marble through.
This open-ended, creative activity delivers many hours of fun and learning as children build, test, revise, and test again, developing strategy, hand-eye coordination, and spatial reasoning along the way.
Use the re-usable, non-marking putty to adhere pieces to walls, doors, or windows. Includes 32 course pieces and tubes, reusable putty, and four glow-in-the-dark marbles. Ages 5 and up.