Beep! Beep! Back up into one of the toughest construction machines: concrete mixers! Learn why concrete mixers are are important at the job site, what makes them special, and more. Complete with a More Facts section and bolded glossary terms. Young readers will gather basic information through easy-to-read, simple text alongside colorful full-bleed photographs. Aligned to Common Core Standards and correlated to state standards. Abdo Kids is a division of ABDO.