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This is an extension (literally) to the popular 
This maths poster lists the first 25 square numbers.
This is a set of 36 cards, featuring the 9 times table; 0 to 180 (twice).
If you are working with Pi, this is simple 'poster' resource is an ideal way to get children thinking and talking about this special number.
This speedy, two-player addition game is designed to help reinforce number bonds to 10 or 20. You will need the downloadable
This a set of Counting Posters for the numbers 1 to 10 for classroom display. Unlike most similar counting resources however, these are designed to clearly demonstrate the changing magnitude of the numbers. 
A simple maths game to encourage children to practice (and to share) quick addition strategies. This is suitable for 3 or more players 