Mystery Math A First Book of Algebra Author:David A. Adler, Edward Miller (Illustrator) Algebra can be a mystery to many readers. But in this accessible first book of algebra set in a creepy haunted house, readers will learn to find the unknown number of skeletons, ravens, and bats by using simple addition, subtraction, multiplication, and division to solve equations. — A hands-on activity further illustrates the topic by showing st... more »udents how to make and use a balance scale. Vetted for accuracy by an expert in the new Common Core State Standards.« less