NRICH Number Balance

https://vimeo.com/60469319 Who stole the cookie from the cookie jar? Play this game? How can we work out the answer? Show{...}

If you have ten counters numbered 1 to 10, how many can you put into pairs that add to 10{...}

Launch: Have children write their names of a piece of paper. Put the class names in order of shortest to{...}