Watch the video of Fran re-ordering these number cards. What do you notice? Try it for yourself. What happens?
What do you see as you watch this video? Can you create a similar video for the number 12?
Florence, Ethan and Alma have each added together two 'next-door' numbers. What is the same about their answers?
Choose four of the numbers from 1 to 9 to put in the squares so that the differences between joined squares are odd.
Try out this number trick. What happens with different starting numbers? What do you notice?
Find a great variety of ways of asking questions which make 8.
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.
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.
How many possible symmetrical necklaces can you find? How do you know you've found them all?
Can you put the numbers 1-5 in the V shape so that both 'arms' have the same total?
Place the numbers from 1 to 9 in the squares below so that the difference between joined squares is odd. How many different ways can you do this?
Does this 'trick' for calculating multiples of 11 always work? Why or why not?
Try out some calculations. Are you surprised by the results?
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.