Khan Academy
A website for free education in math, Science, engineering, computing, arts, humanities, economics, finance, and more https://www.khanacademy.org/ |
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Read&Write for Google Chrome
Offers powerful support tools for reading, writing, studying, and research https://chrome.google.com/webstore/detail/readwrite-for-google-chro/inoeonmfapjbbkmdafoankkfajkcphgd |