View Spread Scientific Instruments Trace the remarkable evolution of scientific instruments from the compound microscopes of the 16th century to the miniscule microscopes being developed today. RL Grades 4 IL Grades 3-6 Details: Product type: Paperback Book Paperback Book 6-Pack ISBN: 978-1-4358-3821-5 Author: Suzanne Slade Copyright: 2007 Reading Level: Grade 4 Interest Level: Grades 3-6 Lexile: 825L Dimensions: 7 1/8" x 8 1/2" Paperback Book — $23.60 / $20.10 Paperback Book — $8.05 / $6.85 6-Pack — $48.30 / $41.10