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Klutz Lego Chain Reactions Science & Building Kit

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Klutz Lego Chain Reactions Science/STEM Activity Kit
  • Nappa silver award winner
  • Design and build 10 amazing moving machines - teach your bricks new tricks
  • Comes with 80 page instructions, 33 LEGO pieces, Instructions for 10...
  • Includes a 80 page instructional book with Klutz Certified crystal clear...
  • Includes more than 30 essential LEGO elements