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Use this unique search engine to locate free books online searching multiple resource libraries at once.
Apture Highlights is a free tool, built from the ground up to let you take the power of Google search, and the richness YouTube, Flickr, Twitter, and Wikipedia with you to any site. Just highlight a phrase on any site to reveal the web's best content without ever leaving the page. Fast, powerful, and fun.
"In a brave new world of learning, OER content is made free to use or share, and in some cases, to change and share again, made possible through licensing, so that both teachers and learners can share what they know.
Browse and search OER Commons to find curriculum, and tag, rate, and review it for others."
ECHO (Exploring and Collecting History Online) is a directory to 5,000+ websites concerning the history of science, technology, and industry. You can search it, browse it according to category, or even look at the tag cloud we've generated.
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