Introduction to Mathematical Thinking
Mathematics for the Nonmathematician
A Mind for Numbers: How to Excel at Math and Science (Even If You Flunked Algebra)
What Is Mathematics? An Elementary Approach to Ideas and Methods
Finding Fibonacci: The Quest to Rediscover the Forgotten Mathematical Genius Who Changed the World
The Joy of x: A Guided Tour of Math, from One to Infinity
Concepts of Modern Mathematics (Dover Books on Mathematics)
The Math Book: From Pythagoras to the 57th Dimension, 250 Milestones in the History of Mathematics (Sterling Milestones)