This book is about number combinations and probability.

It's almost time for the show to begin -- but where are all the lizards? As a frantic snake looks high and low for the performers, they start to arrive, first by fives and then by tens. Will all fifty lizards show up in time? A lively rhymed story and pictures bursting with color introduce the math concept of counting by fives and tens, an important first step in learning addition and multiplication.

It's hard work, taking care of 5 little ducks. But when each little duck comes home with a friend -- oh, no! Now it's double the ducks and double the work. How can 1 little boy get everything done? Understanding how to double numbers helps children master both addition and multiplication. Fun, friendship, and lots of ducks make learning this essential skill both easy and entertaining.

How do people measure weight, volume, length, or height? Read this book to find out.

Welcome to neighborhood dog show! First Maxie speaks. Second Baxter begs. Third Daisy rolls over, but will Henry the fourth steal the show? Learning ordinals with this pack of playful pooches will have readers sitting up and begging for more.

Readers learn about direction when they read about Centipede's attempt to dance with his one hundred legs.

Missing Mittens Every animal on Farmer Bill's farm is missing one mitten. Readers can investigate odd and even numbers as they unravel this mitten mystery!

Monster Musical Chairs Every time the music stops, one more monster is OUT! Kids won't be able to sit still for this musical introduction to subtraction at its simplest.

Math in Society is a survey of contemporary mathematical topics, appropriate for a college-level topics course for liberal arts major, or as a general quantitative reasoning course.This book is an open textbook; it can be read free online at http://www.opentextbookstore.com/mathinsociety/. Editable versions of the chapters are available as well.