Khan Academy
Watch. Practice. Learn almost anything for free. With a library of over 2,400 videos covering everything from arithmetic to physics, finance, and history and 150 practice exercises, we're on a mission to help you learn what you want, when you want, at your own pace.
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GeoGebra
Interactive, free online graphing calculator from GeoGebra: graph functions, plot data, drag sliders, and much more!
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ACT Academy
ACT Academy is the go-to place to get personalized practice for the ACT. Join for FREE!
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