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Excellent videos explaining the history and meaning behind 60 different scientific symbols

Collection of universal symbols with Creative Commons licenses!

Although central to the business of higher education, the LMS has also become a symbol of the status quo that supports administrative functions more effectively than teaching and learning activities. Personal learning environments offer an alternative, but with their own limitations. An open learning network helps bridge the gap between the PLE and the LMS, combining the best elements of each approach. The initial implementation of an OLN at Brigham Young University represents a new learning platform model in higher education.

short, general analysis of Catcher in the Rye characters/symbols by high school teacher

Great site! When you click on an element symbol a short (2 to 3 min.) video discussing that element appears.