Why Pi?: How Math Applies to Everyday Life
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.
|Lexile ® Measure
|Ages 7 to 9, Ages 10 to 12
|Penguin Random House