Jennifer Boothroyd 
How Do Hang Gliders Work? 

Audisee(R) e Books with Audio combine professional narration and text highlighting for an engaging read aloud experience! Would you want to swoop through the air like a bird? Riding a hang glider is a fun way to fly. But a hang glider has no motor. How does the pilot take off? How does the hang glider stay in the air? Learn the answers in this book!