https://www.teacherspayteachers.com/

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Visitors to the National Science Foundation’s Biology Research Overview site are privy to an interactive tour that guides users through a three-dimensional image of a human cell, complete with numbered parts such as the mitochondria and the nucleus.

http://www.nsf.gov/news/overviews/biology/index.jsp

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Faculty at the University of Houston’s history department and College of Education have designed the “Digital History” web site to support the teaching of American history to K-12 students. The site includes an online textbook, annotated historical documents, and more than 70 interactive, inquiry-based modules. Check it out at:

http://www.digitalhistory.uh.edu/

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