Eco - Friendly Wooden Educational Toys with a Gardening and Plant - Growing KitGreen science Potato Clock 4M

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Be a scientist as you discover how to power this digital clock using potatoes and NO batteries. Experiment to find out what other substances will power the clock.
  • Age: 8 years and up
  • Contains digital clock with wires, pots, connecting wire, transparent tapes, copper and zinc strips and detailed instructions.