“Kids, young and old, fall in love with math when they see how real-life and effortless it becomes thanks to these books.” —Kimberly D. Mueller, Ed.D., First Grade Teacher, Ashbrook School, Lumberton NJ Less Than Zero  is perfect for teaching negative numbers to second, third, and fourth graders. Perry the Penguin needs 9 clams to buy an ice scooter—but he's not very good at saving. As Perry earns, spends, finds, loses, and borrows clams, a simple line graph demonstrates the concept of negative numbers. Kids will love the story and the illustrations by Frank Remkiewicz. Parents and educators will love how the story and pictures make understanding the math concepts a breeze—as well as the concrete examples of how math works. The book contains activities for adults to do with kids to extend math into their own lives.  Math skills are life skills, and the MathStart series supports success! This award-winning series by Stuart J. Murphy teaches math through stories and visual models 63 books divided into three levels with 21 books in each Fun activities kids will love are included to help parents and teachers emphasize the lessons Engaging and relatable stories, with each story revolving around practical applications of the math concept presented Lively art from top-notch illustrators Charts and other visual representations help children understand how the math works and promote deeper comprehension MathStart's unique combination of stories, illustrations, and visual models helps teachers and parents in the teaching of math and provides all children with the opportunity to succeed. The math concepts taught in MathStart books conform to state and national standards. Level 1 is Pre-K–Kindergarten; Level 2 is Grades 1–3; Level 3 is Grades 2–4. The series follows math topics across grades so there is a foundational path to learning that runs through the levels. Help kids with their math skills  plus  their reading skills with the engaging and fun MathStart series!