Stuart J. Murphy travels all over the United States talking to thousands of kids. And you'll never believe what they talk about: MATH! Stuart shows kids that they use math every day -- to share a pizza, spend their allowance, and even sort socks. Stuart writes funny stories about math -- and if you read his books, you'll start to see the fun in math, too. Most classrooms celebrate 100 days of school. But for Mrs. Lopez's class, it's 100 days of cool! Something new and cool is bound to happen every day, all the way from 1 to 100.