It's a giant piece of cardboard and we just keep adding to it.
What can you do at home? Count! Pennies, Cheerios, Fruit Loops, stickers, LEGOS, small rocks, paper clips and more! Anything you have a lot of will work! (I'm sure we had one hundred Hot Wheels when the boys were little). Put the items in groups of ten. Count by ones to one hundred. Count by tens to one hundred. Have some fun counting to one hundred with your child!