Numbers in the Real World
Index of Applications


Numbers in the Real World applications are exploration exercises that build upon the
real-world uses of math discussed in the textbook. Many of these problems require you to visit
and collect data from external Web sites. The problems are organized by the section and page
in the book where a similar problem is found.

Section R.1, page 8
    Note Taking:  Learn how music notes are based on mathematics.

Section 1.7, page 74
    Stat the Quarterback:  Learn how the NFL rates their quarterbacks.  Rate your favorite QB.

Section 1.8, page 86
    Fool the Guesser:  Use the divisibility test for nines to amaze your friends at parties.

Section 2.4, page 134
    Heat Index:  Study how the heat index is related to relative humidity and air temperature.

Section 2.6, page 154
    Women in Mathematics:  Are more women going into mathematics fields?  Look here for statistics.

Chapter 2 Summary, page 169
    Number Magic 1:  Learn some fun techniques to do arithmetic..

Section 3.1, page 186
    Sale Prices:  Learn tips to figure store discounts quicker and easier.

Section 4.1, page 248
    Magic Squares:  More number fun using magic squares.

Section 4.2, page 254
    Identification Numbers:  How do they know your vehicle VIN number is valid?  Find out here.

Section 4.3, page 262
    Calculating GPA:  Learn how to calculate your cumulative grade point average.

Section 4.5, page 278
    Tales of the Crypt:  Learn simple encoding algorithms.  Make up your own secret code.

Section 5.1, page 306
    Weight Loss:  Study how much you would weigh on different planets.

Section 5.3, page 318
    That's Stats:  Use statistics to compare bowling scores.

Section 5.4, page 326
    Number Magic 2:  More number fun to amaze your friends.

Section 5.6, page 340
    Easy as Pi:  Use a Monte Carlo method to approximate pi.

Section 5.7, page 352
    Gauss Again:  Learn about Gauss and use his method to sum whole numbers from 1 to 100.

Section 8.1, page 532
    Polya Process:  Study George Polya's problem-solving process and apply it to various problems.

Section 9.1, page 552
    Trade Ya:  Study exponential growth and how it applies to pyramid schemes.