
Help kids with their math skills plus their reading skills with the engaging and fun MathStart series 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...

"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...


"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...


