- This is an add-on to the Actions & Reactions Starter Set!
- Physics has never been so astonishing!
- A truly unique supplement kit with 5 special musical tracks to create circuits with a decidedly original effect
- The musical tracks have special plates that, when struck by the ball along the route, play different notes like a real xylophone
- The manual included guides the child step-by-step through endless fun
- Build your circuits and defy the laws of physics
- Your imagination is boundless and so is Action and Reaction
- Made in Italy.