[youtube=http://www.youtube.com/watch?feature=player_embedded&v=X_iW9nrBtHI] Keeping with my theme of DIY projects as gifts, I present to you this little treat, a ...
DIY Marble Machine Teaches STEM Principles October 25, 2016 Modular wooden ‘marble machines’ created by Tinkineer teach kids and adults basic STEM principles while furnishing a mesmerizing, fun ...
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