Search Results: 28 books from 6 publishers. Learn more

Pythagoras and the Ratios

Julie Ellis (author), Phyllis Hornung Peacock (illustrator)

Publisher: Charlesbridge ISBN: 9781570917769

A Math Adventure! Julie Ellis and Phyllis Hornung Peacock team up once again to explore Pythagorean ratios in this humorous sequel to What's Your Angle, Pythagoras? Pythagoras and his cousins want to win a music contest, but first they must figure out how to play their instruments in tune, something that's never been done before. While trying to fix the problem, Pythagoras makes an important discovery--notes that sound pleasant together have a certain mathematical relationship. When Pythagoras applies this ratio to his cousins' pipes and lyres, the result is music to the ears. This book is good for your brain because: Mathematical problem solving, Ratios, Measuring, Musical Theory, History of Instruments

American Coins and Bills

Tim Clifford (author)

Publisher: Rourke Publishing ISBN: 9781604724028

Provides the history of American coins and bills and shows how they have changed over time.

Money Through the Ages

Tim Clifford (author)

Publisher: Rourke Publishing ISBN: 9781604724066

Discusses how money was used throughout history.