4M GREEN SCIENCE - POTATO CLOCK

by GREEN SCIENCE
Sale
$24.95
$17.00

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.

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