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Clank! A crane drops a steel beam on top of a skyscraper! Find out more about wrecking balls, heavy loads, and other things a crane might lift. Additional features to aid comprehension include a table of contents, informative sidebars and captions, an activity, critical-thinking questions, sources for further research, a phonetic glossary, an index, and an introduction to the author. Activities for further learning Author/Illustrator biography Educational front/back matter Glossary of key words Index Informative sidebars Phonetics Photo captions Sources for further research Suggested websites Table of contents Let's get ready to have fun and learn something new! Whether they stop to stare at an airplane flying overhead or can't take their eyes off a massive digger lifting a boulder out of the ground, children are captivated by big machines at work. Now curious kids can read more about their favorite machines. Each title combines color photos and simple language to teach young readers about the parts of big machines, what they are used for, and how they work. The text is enhanced by interesting sidebars, a phonetic glossary, a fun activity, sources for additional research, and questions for further reflection.