STC Literacy Series™ Developed by the NSRC to meet the needs of the early elementary inquiry student, STC Literacy Series™ for grades K-2 STC® units balance the needs of emerging readers with your state's content standards. Content is presented in a colorful, engaging, and age-appropriate manner ideal for your reading time. Key features include: Strong text-picture match Vocabulary in context Fun facts In-depth questions Photo glossary Colorful STC® reading guide

Grades 3–4. Sound introduces students to a form of energy—sound waves—that can make sweet music or shatter glass. They will read about the sound heard (almost) around the world and learn to use sound to find out how far away a thunderstorm is. Other stories describe man’s determination to fly faster than the speed of sound.

They will read about how animals and people use sound to communicate, and how people use technology to improve their hearing. Finally, they will visit curators at the Smithsonian Institution who preserve important sounds—speeches and music—for posterity.