<http://schema.org/description>
"GLaDOS is recruiting new test subjects, and they might be your kids. Valve has invited educators to sign up for its &amp;quot;Steam for Schools&amp;quot; beta program, which offers a special edition of Steam featuring only Portal 2 and the puzzle maker. The idea is to use Portal 2&amp;#39;s mechanics to teach basic physics and spatial reasoning."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.pcgamer.com/valve-rolls-out-steam-for-schools-to-teach-math-and-physics-lessons-with-portal-2/>