"Grades 1 and up. Turn your classroom into a glow-in-the-dark planetarium that's out of this world! Hang the Sun and nine planets from the ceiling, turn off the lights, and watch your students experience the mysteries of space. It's the perfect springboard for science lessons, discovery activities, and class projects. This easy-to-assemble set includes the Sun and nine planets (with attached hangers), 32 feet of clear plastic line, plus an instruction guide featuring fun, engaging facts about the solar system."