The Joy of X: A Guided Tour of Math, from One to Infinity by Steven Strogatz snails 19 From Marias River to

19 From Marias River to the Great Falls

The Children's Book of Birdwatching celebrates local wildlife and teaches children about the challenges birds face and what we can do to help

"Sit down in the lowest room"

Soil fertility

this book provides a wonderful foundation for bird-watching and nature observation

The Joy of X: A Guided Tour of Math, from One to Infinity by Steven Strogatz snails 19 From Marias River to"Delightful . . . easily digestible chapters include plenty of helpful examples and illustrations. You'll never forget the Pythagorean theorem again!" Scientific American Many people take math in high school and promptly forget much of it. But math plays a part in all of our lives all of the time, whether we know it or not. In The Joy of x, Steven Strogatz expands on his hit New York Times series to explain the big ideas of math gently and clearly,