Play on paper or use the online version.
The winner is the player who shades the last petal.
Noughts and crosses or try Endless Noughts and crosses from Nrich
The classic Game – if you go first can you ensure that you win?
Noughts and Crosses – Strategy
Note also these games from Nrich, try Online, Fifteen and Jam – try these in the order given. What do you notice about the strategies for these games?
Odd Tic Tac (noughts and crosses variant) (NRICH)
Square It (NRICH game) Also known as ‘Boxes‘
Play on paper or use the interactivity on Nrich. Players take it in turns to click on a dot on the grid – the first player’s dots will be red and the second player’s (or computer’s) will be blue. The winner is the first to have four dots that can be joined by straight lines to form a square.Note you can click ‘Full-Screen Version’
Try playing Sprouts, another game where all you need is a pencil and paper. See this article from Nrich ‘Sprouts Explained’
You can watch a video from the Association of Teachers of Mathematics Maths Snack video series.