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Stephanie McKellop, a Ph.D. Student at the University of Pennsylvania, sent a tweet that is making its rounds in the interwebs. She posted how students used a shared Google Doc for a semester course to collectively post and share notes from the course. At the end of the semester the students had this complete document of notes, questions, and explanations from their peers. It was a brillant display of collaboration. Perhaps this will catch on. I am interested to see how it evolves over time and if it will catch on with teachers as well.