A simple story in rhyme and colorful illustrations introduce young children to the math concepts of place value and counting by tens.

"More Penguin Place Value" is a sequel to the popular children's book, "Penguin Place Value." This delightful book provides opportunities for children to practi

You had better not monkey around when it comes to place value. The monkeys in this book can tell you why! As they bake the biggest banana cupcake ever, they nee

Zero. Zip. Zilch. Nada. That's what all the other numbers think of Zero. He doesn't add anything in addition. He's of no use in division. And don't even ask wha

Penguin is very demanding and must learn to use his manners and say please.