Houghton Mifflin Harcourt

About Time : A First Look at Time and Clocks

by Bruce Koscielniak

A fascinating trip through time that explores how it works, how we keep it, and how it affects our daily lives. As a Common Core text exemplar, Koscielniak's history of time and clocks will engage and entertain curious young readers.

Format: Paperback
ISBN-13/ EAN: 9780544105126
ISBN-10: 0544105125
Pages: 32
Publication Date: 09/10/2013
Carton Quantity: 50
Grade Level: 3,4,5
Age Range: 5,6,7,8


“[An] impressive history of timekeeping.”—Horn Book

Bruce Koscielniak, in this Common Core text exemplar, tells the intriguing story of the many years spent tinkering and inventing to perfect the art of telling time. When time itself was undefined, no one knew the difference between a minute, an hour, and a day. Then people started creating tools to measure time. First they used the sun, the moon, and the water, but soon after people began using their knowledge about the natural world to build clocks and to create calendars made up of months and years. Centuries later, we have clocks and calendars all around us!

This title has been selected as a Common Core Text Exemplar (Grades 4-5, Informational Texts)

Bruce Koscielniak

Bruce Koscielniak is the author and illustrator of several books for children; he is also a musician who has played the violin and jazz guitar for many years. He lives in the Berkshires region of Massachusetts. Read More