<p/><br></br><p><b> About the Book </b></p></br></br>Building a fort in the backyard, a grandfather and granddaughter get help from six simple machines: lever, pulley, inclined plane, wheel and axle, screw, and wedge.<p/><br></br><p><b> Book Synopsis </b></p></br></br>When a young child decides to build a fort in the backyard, Grandpa comes forward to help. But they can't do it alone--they get help from the six simple machines: lever, pulley, inclined plane, wheel and axle, screw, and wedge. Told in cumulative rhyme, similar to The House That Jack Built, readers follow the building process to completion and discover the surprise reason it was built.<p/><br></br><p><b> Review Quotes </b></p></br></br><br>would also enjoy having this book because it describes a fun project for parents to do with their child. Who, as a 6 or 7 year old, would not love to have a fort?!! Good science, good reading, and lots of fun--a great combination. - NSTA Recommends<br><br>It's a short but colorful book, easy to read, and a useful classroom springboard for introducing some basic concepts of mechanics using commonly found tools. - Science Books & Films<br><br>The Fort on Fourth Street becomes a complete unit study when these extra resources are utilized, and the subject matter of simple machines is easy to expand on with blocks, Legos, or other hands-on ingredients for demonstrating simple machines at work. - Learning Table<br><p/><br></br><p><b> About the Author </b></p></br></br>In addition to Cash Kat, Christina Wald has illustrated Fibonacci Zoo, A Cool Summer Tail, A Warm Winter Tail, Habitat Spy, Little Red Bat, and Henry the Impatient Heron for Arbordale. She also enjoys illustrating a wide variety of toys, games, books, and magazines. From a book that featured hundreds of animals on each page (Look, Find, and Learn: Animals of the World) to games including the Star Wars role playing game series, every assignment covers something new and exciting. In recent years, she has illustrated tons of different animals for books and other publications. Christina enjoys the research aspect of such projects, saying that each new book is a fascinating new learning experience. She often integrates travel to research for her illustrations. She lives in Ohio with her husband and three cats. Visit Christina's website: http: //www.christinawald.com/