Teachers and Students Speak about PhET HD

What are the PhET Interactive Simulations? What makes them effective? This video gives a tour of the simulations, plus the research and guiding principles that go into making them such powerful tools for learning. Find our free simulations at http://phet.colorado.edu Help us caption and translate this video on Amara.org: http://www.amara.org/en/videos/qPSYFPdhTnKP/info/teachers-and-students-speak-about-phet/ Help us caption & translate this video! http://amara.org/v/BUQX/