Machines help make work easier, like when you need to lift something heavy or reach way up high. There are six simple machines: the lever, the wheel and axle, the pulley, the ramp, the wedge, and the screw. Can you adjust a seesaw to lift an elephant? What happens when you combine two or more simple machines? Read and find out! With colorful illustrations and engaging text, Simple Machines will delight young readers who love figuring out how things work. Featuring rich vocabulary bolded throughout the text, this book also includes a glossary and a find out more section with a lever experiment and web research prompts. Both the text and the artwork were vetted for accuracy by Dr. Babatunde A. Ogunnaike, dean of the College of Engineering at the University of Delaware. This is a Level 2 Let's-Read-and-Find-Out Science title, which means the book explores more challenging concepts for children in the primary grades and supports the Common Core Learning Standards, Next Generation Science Standards, and the Science, Technology, Engineering, and Math (STEM) standards. Let's-Read-and-Find-Out Science is the winner of the American Association for the Advancement of Science/Subaru Science Books & Films Prize for Outstanding Science Series.

About the Author
D. J. Ward is a high school science teacher who also writes science books for children. His titles include Exploring Mars, Materials Science, and another book in the Let's-Read-and-Find-Out Science series, What Happens to Our Trash? He lives in Castle Rock, Colorado. Mike Lowery has illustrated numerous children's books, including the Ken Jennings' Junior Genius Guides series and What Can a Crane Pick Up? by Rebecca Kai Dotlich. A professor of illustration at the Savannah College of Art and Design, he lives in Atlanta, Georgia.


Book Information
ISBN 9780062321473
Author D. j. Ward
Format Paperback
Page Count 40
Imprint HarperCollins
Publisher HarperCollins Publishers Inc
Weight(grams) 155g
Dimensions(mm) 205mm * 255mm * 5mm