They're also readily accessible-with a simple click, these simulations, written in Java and Flash, open up an engaging science playground. The simulations are presented as individual exploratory environments rather than courses, so each computer simulation can be integrated into various classroom activities. NSF's Directorate for Education and Human Resources (EHR) provides primary support through its Transforming Undergraduate Education in Science, Technology, Engineering and Mathematics program (and its predecessor the Course, Curriculum and Laboratory Improvement Program) and the Discovery Research K-12 program. The PhET project, founded by Nobel Laureate Carl Wieman and funded by the National Science Foundation (NSF) and others, provides free, interactive, research-based simulations of physical phenomena for elementary through university students. The PhET Interactive Simulations project at the University of Colorado Boulder helps students discover the answers and go beyond, while improving their scientific literacy. The physical world poses a number of questions. What causes a balloon to stick to a sweater? How do microwaves heat coffee? How is electricity generated from a bar magnet? Students use the PhET Wave Interference simulation in their introductory physics lab.
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