• Unimaginable Mathematical feats: http://www-gap.dcs.st-and.ac.uk/~history/HistTopics/Mental_arithmetic.html
• Interesting mental sums can be tried here: http://math.usask.ca/emr/menu_arith.html
• Maths is there around us everyday. See how here. http://www.carolhurst.com/subjects/math/mathout.html
• This page focuses on puzzles with sliding pieces! http://www.org2.com/jaap/puzzles/
• Classic tales are being rewritten with some contraint.
  Can you find out what that constraint is? http://users.aol.com/s6sj7gt/cadenza.html

Check this site regularly for more interesting weblinks. New ones are regularly added.