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20171003 1-6 Grade Science Class

Submitted by Valerie on Tue, 10/17/2017 - 15:09

探索月球與衛星繞地球的太空軌道科學 & 動手做月球與衛星繞地球創意科學實驗

Introduction to Orbital Science of Satellite/Moon with DIY Science Projects

  

  

  

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