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Wikis are fantastic tools that allow users from all over the web to add their own bits of information into a huge collection of data which then gets displayed to everyone else on the site via hyperlinked text within the article. This means if someone has no knowledge on a subject, they can still potentially learn something new.

...it's time for a shift away from teaching to the test and a shift towards challenging kids and seriously raising the bar. In classrooms where we must accommodate a very heterogeneous group of kids, there is nothing better than a computer and some interesting science equipment to let the high-flyers, well, fly high. There aren't actually many better tools than some well-thought-out software and hands-on tools to reach the kids who are struggling. Computers should be much more than Wikipedia access points and word processors.