Brainteasers
- Big Ben - angle between the clock hands
- A Simple Math Calculation - try this without using a calculator
- Regions of Equal Areas - surprise, surprise
- Angle in a semicircle - the easiest one
- Two probability problems
Games
24-point
- Playing Tips
- K stands for 13, Q stands for 12, J stand for 11, A stands for 1
- Some hands have no solutions and marks will be awarded if you guess correctly
Tic Tac Toe - more challenging than the conventional version
Hex 7 - invented independently in the 1940's by Piet Hein, born in Denmark and inventor of many mathematical games; and by John Nash, the American mathematician who won the Nobel Prize in Economic Science.
More challenges!
Figure this! Math Challenges for families - more than 60 well known problems with full solutions. Graphics are attractive too!
Interactive Mathematics Miscellany and Puzzles
Math Puzzles from thinks.com
100 simple mathematical problems with simple solutions provided.
Reliability of visual proofs ? Simeon triangle
- Get.to/Mathematics - a most resourceful website covering mathematics at HKCEE and HKAL level, exercises and notes as well as beautiful sketchpad diagrams included. The website is updated frequently and is a must for students.
- Cut the-knot -excellent website with puzzles, columns with interactive applets, eye opening series, proofs etc.
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Mac Tutor History of Math Archives from University of St.Andrews, Scotland - An excellent website including a very useful famous curves index, mathematicians of the day, quotation, history topics, timelines and don't miss the Anniversaries.
- Maths Online - excellent multimedia learning material, applets, interactive exercises and online tools - link by topics - collections
- Shoder Activities Index - excellent interactive activities