Plato Websites
coolmath.com
Cool Math has free online cool math lessons, cool math games and fun math activities. Really clear math lessons (pre-algebra, algebra, precalculus), cool math games, online...
29,588 
$ 453,600.00
philosophybasics.com
The Basics of Philosophy: A huge subject broken down into manageable chunks
121,459 $ 91,200.00
academyofideas.com
Exploring the ideas of some of the greatest thinkers for the purpose of empowering the individual and promoting social freedom.
219,216 $ 37,260.00
storyofmathematics.com
The Story of Mathematics - A History of Mathematical Thought from Ancient Times to the Modern Day
273,439 $ 30,240.00