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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.

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Achi

This game for two players comes from Ghana. However, stones that were marked for this game in the third century AD have been found near Hadrian's Wall in Northern England.

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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.

Matching Fractions Decimals Percentages

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

Match the cards with the same value.
Keep an eye on your score - ending at around 400 would be an excellent score.

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To download a printable version of this game use the links below. If you print double-sided, the cards will each have an NRICH logo on the back. If you would prefer them to be blank on the back, please just print the first page.

Portable Document Format (.pdf) Word 2007 Document (.docx) Word 2003 Document (.doc)