More low threshold high ceiling tasks

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.

Try out this number trick. What happens with different starting numbers? What do you notice?

Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game.

Dotty Six is a simple dice game that you can adapt in many ways.

Choose four of the numbers from 1 to 9 to put in the squares so that the differences between joined squares are odd.

Does this 'trick' for calculating multiples of 11 always work? Why or why not?

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

Can you put the numbers 1-5 in the V shape so that both 'arms' have the same total?