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ImageStamper is a free tool for keeping dated, independently verified copies of license conditions associated with creative commons images. You can use it to safeguard your use of free images from license changes, or to prove you are the original image creato

This looks pretty fabulous! "Leading the Revolution in Education OpenClass is a dynamic, scalable, fully cloud-based learning environment that stimulates social learning and enables the distribution of content at massive scale to students wherever they are. And did we mention it's completely FREE? With OpenClass there are no hardware costs, licensing costs, or hosting costs. Why would we do that? Because "free" enables the widespread adoption of the most effective approaches to learning that encourage interaction within the classroom and around the world."

Whether you're a teacher looking to incorporate new media into a classroom setting, a homeschooling family, or a parent hoping to supplement the day's formal coursework, the following resources offer some particularly great examples of using digital technology to get kids exploring the universe. They're fun. They're free. And they feature a diverse selection of topics and strategies, meaning almost every user will find something of interest

Good explanation and example of tacit or informal collusion via price leadership

"This book provides an updated look at issues that comprise the online learning experience creation process. " Available as ePub, PDF, MOBI and others

Really awesome - nearly 150 free science books!

"Here's an alphabetical list of all available free books. Note that many of the links will bring you to an external page, usually with more info about the book and the download links. Also, the links are updated as frequently as possible, however some of them might be broken. Broken links are constantly being fixed. In case you want to report a broken link, or a link that violates copyrights, use the contact form. "