Take a look at Anno's Counting Book in the video below, focusing on the pages that show 1, 2 and 3. Can you spot all the things there are 1, 2 or 3 of? What do you notice about how each number is represented?
On paper plates or sheets of paper draw 1, 2 and 3 spots on each like the faces of a dice. Shuffle them up and then turn them face down. See how fast you can read each number! Can you do it without counting every time?