Science4You Ecological Clock
- Build a ecological digital clock using the water contained in food!
- 10 Experiments, 24 page illustrated book
- Contents: Wired digital clock, connecting wires, clear tape, cups, zinc and copper strips
- Discover the world of ecological energies, Prove to yourself that you don't need fossil related energy
- Age 8+
- Warning: Not suitable for children under 36 months