Four kids and their sidekick, Petey the Parrot, run a lemonade stand whose patrons include all kinds of wacky neighborsâ€”even a juggler. They create a bar graph to track the rise and fall of their lemonade sales. Author Stuart Murphy and illustrator Tricia Tusa make understanding bar graphs a breeze with lively art and a warm story. This is a Level 3 MathStart book, which is perfect for kids ages 7 and up. The MathStart series uses funny stories and colorful art to show kids that they use math every day, even outside of the classroom! Each book features an activity guide to have fun with the math concepts presented in the story. Supports the Common Core State Standards.