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Online Education. Udacity - Educating the 21st Century. OpenStudy: Study Together. Lets compile a list of the best online learning centers. We could all use a little education.


"Waiting for Superman": What it Means for You and Your Child. Every president, from Johnson to Obama, has made big promises when it comes to “fixing” education in America.

"Waiting for Superman": What it Means for You and Your Child

And almost every parent, from then until now has asked themselves an essential question—“Is my child getting a good education?” Regardless of neighborhood or income, it’s a concern that keeps parents up at night, and the answer rests at the heart of a national firestorm brewing over education.


Math. Nature. The Messenger Series. Lecture 1: The geometry of linear equations. Fun. Science. Physics. Astrophysics I « Physics Made Easy. Luminosity: Fλ is the radiative flux at the stellar surface.

Astrophysics I « Physics Made Easy

Energy may be lost due to neutrinos or direct mass loss. Flux: At the Earth’s surface, observed flux is Stellar flux. 18.06 Linear Algebra, Spring 2010.