People use an incredible variety of materials to make life easier. Each book in this fascinating series examines how a material was first developed, how it is produced today, and the ways that people use it. Each book also features a “That’s Amazing!” special feature, several “Did You Know?” facts, a table of contents, a reading comprehension quiz, a glossary, additional resources, and an index. This Focus Readers series is at the Beacon level, aligned to reading levels of grades 2-3 and interest levels of grades 3-5.