National Geographic Primary Readers is a high-interest series of beginning reading books that have been developed in consultation with education experts. The books pair magnificent National Geographic photographs with lively text by skilled children's book authors across four reading levels. How cool is a supersonic jet that can zip, dip, and zoom through the air? Or a helicopter that hovers as still as a hummingbird? In this 32-page reader, a real-life pilot introduces kids to the greatest planes that ever flew. Level 2: Becoming fluentThese books are a good match for kids who are developing reading stamina and enjoy a longer book. They are ideal for readers of Green, Orange and Turquoise books.