Everything you need to understand or teach Fallen Angel by Jane Yolen.
"'I saw the most amazing falling star last night,' Courtney said. 'It was the brightest ever.'" Three modern youngsters, all headstrong and opinionated, search for a falling star and are confronted by the supernatural. Scientific-minded, they at first try to rationalize what they see, but they eventually uses their scientific view of the world to help a fallen angel that needs wings in order to return to Heaven. "Fallen Angel" concerns a serious subject but is told with a good sense of humor and a light touch, and it has a terrific conclusion.