Themes: Science Behind Movies, Nonfiction, Tween. How did Edison help movies get started? What was Technicolor? How do 3-D glasses work? Who was Dar Robinson? Has a movie ever amazed you? Red Rhino Books Nonfiction is the first Hi-Lo children's nonfiction series at a first-grade reading level for students in grades 4–7. Visually appealing fullcolor photographs and illustrations—along with fun fact boxes—keep these books flowing. Also includes prereading comprehension questions along with a 20-word glossary for further reading support.