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National Geographic - Catapult

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$27.99

A catapult uses the sudden release of stored potential energy to propel its payload.  Most convert tension or torsion energy that was more slowly and manually built up within the device before release, via springs, bows, twisted rope, elastic, or any of numerous other materials and mechanisms.

  • no tools required
  • no gluing
  • no mess

Includes

  • Book
  • 84 pieces

      Suitable for

      Ages 8+

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