This book is aligned with the Common Core State Standards for kindergarten and first grade in mathematics in operations and algebraic thinking K.OA and 1.OA.10 monsters, looking fine,1 folds down.Still up?9!Photographs of toy dinosaurs, monsters, piglets, and other objects rhyming text and a game help children learn that subtraction is a take-away action! Rows of colorful rubber duckies show subtraction facts. Hummingbirds and chickadees show the difference between addition and subtraction in this entertaining introduction to mathematics.,
