Mark Rober
📚 K-12学习专区🗽 北美@markrober
Former NASA engineer. Current CrunchLabs founder and friend of science. Answers to some common questions: 1) I make a monthly toy we build together on a video, that gets delivered to your house that teaches you to think like an engineer. Check it out at- https://crunchlabs.com 2) I studied Mechan
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