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4M Green Science Kit - Potato Clock

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Original Price $24.95
Current Price $17.00
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SKU 103275

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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.