Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great Insights to Math

I've always loved math, but I've always had difficulties explaining to people why they should care about math. While this is by no means a complete overview of the basics of the subject since there is far too much to cover, it does provide a lot of meaningful insights as to why Mathematics is interesting. It's a very pragmatic approach that does away with romanticism while not condensing the material to something overly dense. This book is a great little book on the wonders of math.