Greg Roza 
Famous Flights [PDF ebook] 
Understanding and Using Variables

Learning math is fun when we see how it applies to our larger world, especially when it has to do with taking flight. This book uses famous aviators and their flights to explain mathematic concepts. Chapter Titles: What are Variables?, The First Flight, The Wright Brothers, Crossing the Atlantic, Charles A. Lindbergh, Amelia Earhart, Breaking the Sound barrier, Around the World, The Future of Flight.