We Are Stardust: Lessons from a Seventh Grade Chemistry Class

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Last night, as I sat in bed with my MacBook, logging end-of-quarter grades for my students, our 12 year old came into our bedroom and asked if I could look something up for him for Chemistry homework. At his request, I typed in "why is iron found in the earth's crust?" Here is what we discovered. "Every iron atom in existence, anywhere in the universe, was formed in the cataclysmic death of a supernova star."
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