Themes: Virtual Reality, Technology, Nonfiction, Tween. What is virtual reality (VR)? What is the difference between reality and VR? What are the benefits of VR? How can VR be used for work? What experiences have you had with VR? 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.