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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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Reasoning based on this Japanese activity.

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Line of Four

A game somewhat similar to 'noughts and crosses' on a much larger space.

Strike it Out

Stage: 1 and 2 Challenge Level: Challenge Level:1
It's a good idea to play the game lots of times to start with to get the feel of it.
You could keep the lines you use for each game and compare them afterwards. Are there any numbers that you haven't crossed off in any of the games you've played? Is it possible to cross them off?