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Teach Engineering
Body Full of Crystals
Your body has lots of crystals, just not any gemstones. The first installment of a three-part unit provides a PowerPoint presentation on crystallization occurring in the human body and about crystallization in general. The resource gives...
Curated OER
Dinosaur and DNA Days
Biology stars extract DNA samples from beef thymus and then examine its properties. They use enzymes to digest the DNA samples, and then use electrophoresis to separate fragments. Finally, they discuss methods and principles of...