Recommended Resources

Mathematics

• Wolfram|Alpha
  Fundamentally new way to get knowledge and answers—not by searching the web, but by doing dynamic computations based on a vast collection of built-in data, algorithms, and methods
• MathWorld
  Extensive mathematical resource from Wolfram
• Brightstorm
  Free online video math lessons
• Khan Academy
  Free online video math lessons
• MIT OpenCourseWare: Mathematics
  Free online mathematics course materials
• Wolfram Demonstrations Project
  Interactive demonstrations for use with free Wolfram CDF Player

Physics

• ComPADRE
  Network of free online physics resource collections
• PhET
  Fun, interactive, research-based simulations of physical phenomena from the PhET project at the University of Colorado
• MIT OpenCourseWare: Physics
  Free online physics course materials
• PhysicsCentral
  From the American Physical Society
• Stellarium
  Free open source planetarium software
• HowStuffWorks

Test Preparation

• Number2.com
  Free online test preparation courses for SAT, ACT, and GRE