1.

COURSERA
WHAT Coursera strives to make education accessible to anyone.
HOW Free courses online from world-class universities, including Princeton University and the University of Michigan. The topics are varied, and lectures are formatted into series of 15-minute-long clips.
BONUS POINTS Freedom is the name of the game: students can watch videos at their convenience and in their own time.

2.

UDACITY
WHAT A free education website for brainy types, founded by four Stanford roboticists.
HOW Udacity currently offers 11 courses , all of which are in science and math-related topics. According to the website, plans are underway to expand the curriculum.
BONUS POINTS Udacity is free of deadlines, free of prerequisites, free of quizzes and other annoying school stuff. Needless to say, courses are also free of charge.

3.

OPEN CULTURE
WHAT High-quality cultural and educational media.
HOW A staggering collection of 400 courses, online, for free, from Ivy League universities, such as Stanford, UCLA, Columbia and Oxford University. Courses run the gamut from science and art to math and economics.
BONUS POINTS Classic and indie films, including many from the 1940’s and 1950’s, are available to watch for free.

4.

TED-ED
WHAT TED, The powerhouse of jaw-dropping lectures needs no introduction. Now, they’re bringing their talent into education with an offshoot, Ted-Ed.
HOW A treasure trove of beautifully animated and gripping videos on a wide array of subjects, such as The Power of Simple Words and How Many Universes are There.  All videos are under 10-minutes-long.
BONUS POINTS Supplemental materials such as quizzes and discussion questions are also available.

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