Subtraction Circles- NRICH

Some of sheep aren’t white. How many colourful sheep are in the book?How many sheep are white? How many more{...}

Launch: Google image search: “weird staircases” and show the screen Look at the different weird and wonderful staircases. Talk about{...}

How can we sort and classify numbers- What makes a number even? What makes a number odd? How can we{...}