"The Bugscope project provides free interactive access to a scanning electron microscope (SEM) so that students anywhere in the world can explore the microscopic world of insects. This educational outreach program from the Beckman Institute's Imaging Technology Group at the University of Illinois supports K-16 classrooms worldwide."

Check out Bugscope here.
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From the Calcblog website:

"Calcblog provides useful tips and tutorials to help you use your graphing, scientific and financial calculator more effectively. Our site covers a host of topics for students, educators and working professionals, including basic math, calculus, finance, statistics, data analysis, as well as test prep for standardized tests such as the SAT, GRE, and GMAT. With the information on our site, you’ll be able to do more with your calculator in no time."

Check out Calcblog here.
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I don't know about you, but I can always use tips on organization and classroom resources.  This site has me covered!

Check out OrganizedTeaching.com here.
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A fellow educator shares their top ten education resource sites.  Check out their blog post here.