Members of Maple Street Save-the-Planet Club are cleaning up Gilroy Park when Ryan has a brainstorm: Instead of throwing aluminum cans in the garbage, why not bring them to the Recycling Center and use the money to buy flowers to decorate the park for Earth Day? Mrs. Watson, the club's advisor, figures out that they're going to need 5,000 cans, so the kids start a big collection campaign at school. Cans are grouped in bags of 10, 100 and 1,000. Recycling facts are sprinkled throughout the illustrations.

Understanding place value is key to working easily with large numbers.

MathStart is an award-winning series by Stuart J. Murphy that teaches math through stories and visual models. Young readers find the stories engaging and relatable, because each story revolves around practical applications of the math concept being presented and features lively art from top-notch illustrators.

Charts and other visual representations help children understand how the math works and promote deeper comprehension. This 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 63-book series is divided into three levels with 21 books in each. 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.