"In Light Bulbs, early fluent readers learn about the science, engineering, and technology behind light bulbs. Vibrant, full-color photos and carefully leveled text engage young readers as they learn about this important technology. Children can learn more about light bulbs using our safe search engine that provides relevant, age-appropriate websites. Light Bulbs also features reading tips for teachers and parents, a table of contents, a glossary, and an index. Light Bulbs is part of Jump!'s How Does It Work? series"--