For school and college students

• How things work
  The site has good content explaining how things work. The blog links, quizzes, pictures make it more interesting…
• Mathgoodies
  Online math tutorials, games, puzzles, worksheets for 9 to 13 year olds.
• Statistics
  A good site to learn concepts of statistics from the net…
• Education in Physics and Mathematics
  For enchanting exposure to physics and mathematics
• Khan Academy
  Excellent learning resource in mathematics and physics in form short video lectures
• Scientifix American
  Ask the experts at Scientific American. Good site where interesting science questions are answered by experts.
• Veritas Prep
  Concepts and resources in mathematics for preparation of examinations.