Happy 11/12/13, otherwise known as "tenty-one, tenty-two, tenty-three."
Do your young children have trouble counting in the teens? Try making up Funny Numbers to help them! It's a great habit to develop, because Funny Numbers will come in handy as mental math tools throughout their school math career.
If you'd like to make your own Happy Math Day post, check out the instructions here: Every Day Is Mathematics Day. And please share a link in the comments section below — I'd love to see what math holiday you invent!
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