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Why Pi?
     

Why Pi?

by Johnny Ball
 

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This entertaining follow-up to DK's popular Go Figure!, Why Pi? presents even more mind-bending ways to think about numbers. This time, author Johnny Ball focuses on how people have used numbers to measure things through the ages, from the ways the ancient Egyptians measured the pyramids to how modern scientists measure time and space.
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Overview

This entertaining follow-up to DK's popular Go Figure!, Why Pi? presents even more mind-bending ways to think about numbers. This time, author Johnny Ball focuses on how people have used numbers to measure things through the ages, from the ways the ancient Egyptians measured the pyramids to how modern scientists measure time and space.
Johnny Ball has hosted more than 20 UK children's television series about math and science. He is known for making math not just easy to understand, but genuinely fun and fascinating. His shows and videos earned him a New York international EMMY nomination, a BAFTA, and 10 other awards. He has written five children's books, including DK's Go Figure!, and an educational musical. His academic credentials include three honorary science doctorates and fellowship of the British Mathematical Association.

Editorial Reviews

Children's Literature - Phyllis Kennemer
A condensed history of mathematics is packed into this ninety-four page book which could be mistaken for a picture book at first glance. "The Ancient World" section honors scientists of ancient civilizations for their observations of the natural order of the universe and their development of measurements that, for the most part, proved accurate. In "The Age of Discovery" section, the contributions of specific people such as Kepler, Copernicus, Galileo, Newton, Harrison, and Mercator are summarized. "The Modern Measuring" section includes facts about measuring temperatures, energy, electricity, light, pressure, and sound. Measurements of big things (the earth and the universe), small things (microchips and atoms), and weird things (horsepower and carat) are described. Advantages of using the metric system are discussed. The tone is upbeat and humorous with jokes and problems to solve throughout. Numerous illustrations, charts, and maps aid in understanding. Includes an index. Young readers will likely spread their study of this book over several sessions. There is too much information to absorb in one sitting. Reviewer: Phyllis Kennemer, Ph.D.
From the Publisher

"[An] extensive look at the history of measurement." – Booklist

Product Details

ISBN-13:
9780756651640
Publisher:
DK
Publication date:
08/31/2009
Pages:
96
Product dimensions:
8.80(w) x 11.00(h) x 0.60(d)
Age Range:
7 - 10 Years

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