You may also like

problem icon

Traffic Lights

The game uses a 3x3 square board. 2 players take turns to play, either placing a red on an empty square, or changing a red to orange, or orange to green. The player who forms 3 of 1 colour in a line wins.

problem icon

Yih or Luk Tsut K'i or Three Men's Morris

Some puzzles requiring no knowledge of knot theory, just a careful inspection of the patterns. A glimpse of the classification of knots and a little about prime knots, crossing numbers and knot arithmetic.

problem icon

Lambs and Tigers

Investigations based on an Indian game.

Estimating Angles

Stage: 2 and 3 Challenge Level: Challenge Level:1

This game offers you an opportunity to improve your ability to estimate angles.

You can either play on your own or challenge a friend.
In both cases you will have 10 goes.
The closer you get to the target angle the more points you will score.

There are three levels:

Level $1: 0-90^\circ$
Level $2: 0-180^\circ$
Level $3: 0-360^\circ$

Full Screen Version

This text is usually replaced by the Flash movie.