4A screw is a simple machine that can be used to fix lots of things. Let's find out how screws are used every day. The phoneme /ew/ is featured in this title. Screws is part of Decodables by Jump!, a comprehensive library of decodable leveled readers that follow a sequenced approach to phonics instruction. Young readers will enjoy colorful, photo-packed nonfiction as they follow a prescribed format supported by the science of readings that encourages reading development.