“One, two, three.” But 3 mice were not enough.
Ask questions to get children reasoning about numbers.
What if the snake found 1 more mouse? How many would he have then? How do you know that? Can you convince me?
What if he found 2 more mice?
What does Snake have to do to make his wish come true?
Use Numicon®, a five-frame or ten-frame to help children work out how to make snake’s wish come true and explain their thinking.