Lee was writing all the counting numbers from 1 to 20. She stopped for a rest after writing seventeen digits. What was the last number she wrote?
What do you see as you watch this video? Can you create a similar video for the number 12?
These pieces of wallpaper need to be ordered from smallest to largest. Can you find a way to do it?
Watch this animation. What do you see? Can you explain why this happens?
This activity creates an opportunity to explore all kinds of number-related patterns.
This challenge involves calculating the number of candles needed on birthday cakes. It is an opportunity to explore numbers and discover new things.