They were once the first pair of earmuffs, a primitive sun visor, and a convenient set of chopsticks. The work done by hands centuries and centuries ago has paved the way for many of our favorite and most useful tools. The always clever Andrew Clements reminds us all that the mother of much invention is right at our fingertips.

This book has been graded for interest at 4-8 years.

There are 48 pages in this book. This is a picture book. A picture book uses pictures and text to tell the story. The number of words varies from zero ('wordless') to around 1k over 32 pages. Picture books are typically aimed at young readers (age 3-6) but can also be aimed at older children (7+). This book was published 2010 by Simon & Schuster .

Andrew Clements is the author of picture books and novels for young readers, including Because Your Daddy Loves You and the perennial bestseller Frindle . He lives in Baldwin, Maine, and can also be found at www. andrewclements. com. Andrew Clements is the author of the enormously popular Frindle . More than 10 million copies of his books have been sold, and he has been nominated for a multitude of state awards, including two Christopher Awards and an Edgar Award. His popular works include About Average , Troublemaker , Extra Credit, Lost and Found, No Talking, Room One, Lunch Money , and more. He is also the author of the Benjamin Pratt & the Keepers of the School series. He lives with his wife in Maine and has four grown children. Visit him at AndrewClements. com. Raquel Jaramillo is a designer and photographer. She lives in Brooklyn, New York.