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Johnson Motor

Published in Science at Home, Resources & Tips and Lesson Plans. Tags: , , , , , , , .

Materials

  • Battery (D or C cell)
  • Insulated wire, about 18-24 gauge
  • Small Magnet
  • 2 Large Uncoated Paper Clips
  • Masking tape
  • Wire Cutters
  • Sand paper

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Play Dough Resistor

Published in Science at Home and Lesson Plans. Tags: , , , , , , , , , , , , , , , .

Materials

Needed per group:

  • ½ can of play dough
  • Knife switch
  • 4 alligator clip wires
  • Voltmeter
  • Ammeter
  • 2 large paper clips, or long metal pins
  • Ruler
  • Power supply, voltage does not need to be variable

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