Two groups of ten piglets getting to know each other demonstrate the numbers between eleven and twenty.

A group of monarch butterflies that is getting ready to migrate demonstrates how to count by tens and provides facts about monarch butterflies.

Animals make perfect counting company! The simple language teaches young readers mathematical terms and counting concepts. Learn to compare numbers in the Balancing Bears book in this adorable series that counts the critters. Special thanks to content consultants Paula J. Maida, PhD. Looking Glass Library is an imprint of Magic Wagon, a division of ABDO Publishing Group. Grades preK-3.