Explore math with Theoni Pappas.

As we look around us, occasionally we see subtle impressions of the presence of mathematics. Some are current; some are left from past centuries. Tracking and discovering the trail of mathematical footprints is both fascinating and rewarding. These impressions help us understand our world and the universe, even as we discover the enormous influence of mathematics on our lives.

Mathematical Footprints follows the trail of mathematics. The order in which these mathematical footprints is presented is random, simply because that is often how they occur. For example, the Pythagoreans did not expect to uncover irrational numbers in the diagonal of a square. Nor did Fibonacci or future mathematicians expect the Fibonacci numbers to be so prevalent in nature. Or, who would have predicted tYactals would become so important in describing everyday objects?

Open this book and discover a mathematical footprint.--from Wide World Publishing

Wide World Pttblishing, 2001, 226 pages, 5 1/2" x 8 1/2", $10.95

Unlock a fascinating world of mathematical challenges and learning with The Mathenmtics Calendar 2004. It features math problems for every day of the year; in each case, the solution is the date. An informative essay, mathematical curiosity, or intriguing problem--plus a handsome graphic--aecompanies each month. Problems cover the spectrum from basic arithmetic to calculus. The answer is only one small part in the process of solving a problem. The challenge is discovering how to arrive at the solution and possibly discovering more than one method of solving it.

The Mathematics Calendar 2004 is loaded with challenging puzzles and problems and short essays on the ways in which math integrates other field. Among this year's featured monthly topics are voting, mathematics and art, weather prediction, and M-theory. Help celebrate the 251h year of an all new Mathematics Calendar.--from Wide World Publishing

Wide World Publishing/Tetra, 2003, 12" x 18", $10.95

Math Stuff is not a book of numbers, formulas, or computations. It's a book of ideas. The mathematics belfind these ideas is discussed in general terms, and each chapter is designed to be self-contained allowing the reader to open a topic at random. Many of the ideas presented are on the cutting edge and deal with anything from abstract conucepts to fiddlehead ferns, from a number to numeral, from software to the nuts and bolts of a computer.

Stuff is the layperson's unpretentious word, which has no limits or boundaries. Math Stuff fills both conscious and uneonscinus space. Often we're obvious to math stuff, just as we're obvious to atoms and molecules. When crossing a bridge, most of us never think about the multiple equations and numbers crunching that went into the bridge's design and construction. When hiking or gardening, we don't think about the mathematics behind rock formations or plant forms. Or when flipping on the TV or using a cell phone, the mathematics of wave theory is farthest from our minds. Yet, math stuff is there describing, explaining, and influencing our lives.

Math Stuff brings it all to us in the Pappas style. Learn what a holydedron is, how computers get stressed, how e-paper will work how codes and numbers work with our bodies. Learn about up-to-datc math ideas and how they impact our lives.--from Wide World Publishing

Wide World Publishing, 2001, 210 pages, 5 1/2" x 8 1/2", $12.95