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Science News May 31, 2003 Ivars Peterson 
Measuring with Jugs Given a 5liter jug, a 3liter jug, and an unlimited supply of water, how do you measure out exactly 4 liters? 
Science News May 17, 2003 Ivars Peterson 
Sequence Puzzles Neil A.J. Sloane of AT&T Shannon Labs in Florham Park, N.J., has been collecting number sequences ever since he was a graduate student at Cornell University in the 1960s. 
Science News May 10, 2003 Ivars Peterson 
Coins for Making Change Efficiently Is ours the optimal choice of coin values for minimizing the number of coins required to handle typical transactions? Computer scientist Jeffrey Shallit of the University of Waterloo has worked out an answer. What the U.S. needs, he says, is an 18cent piece. 
Science News May 3, 2003 Ivars Peterson 
A Geometric Superformula The notion of a simple equation that you can use to generate a wide variety of geometric shapes is an immensely appealing one. Johan Gielis of Antwerp, Belgium, proposes one such formula in the March American Journal of Botany. 
Science News April 26, 2003 Ivars Peterson 
Recycling Topology On the topology of an interesting form: the recycling symbol 
Science News April 19, 2003 Ivars Peterson 
The Colors of an Equation's Roots A few artists have taken advantage of the techniques used to visualize mathematics to create aesthetically pleasing patterns and intriguing artworks. 
Science News April 12, 2003 Ivars Peterson 
Constructing Domino Portraits One rendition of a famous portrait was constructed entirely from 48 complete sets of doublenine dominoes. The work of mathematician Robert Bosch of Oberlin College, this remarkable creation represents the successful application of a novel algorithm for approximating target images as arrays of dominoes. 
Science News April 5, 2003 Ivars Peterson 
Fractured Granite and Fractal Prints A fractured edge of granite tends to show the same degree of roughness at different magnifications. Indeed, nature features many irregular shapes that are selfsimilar  that repeat themselves on different scales within the same object. 
T.H.E. Journal April 2003 Chuck Grant 
Math Sites Offer Helpful Homework Solutions If students and teachers search the Web for "math homework help," you may be surprised by all of the free, constructively helpful sites that are available. 
Industrial Physicist Apr/May 2003 Marko Ledvij 
Curve fitting made easy In science and engineering it is often desirable to represent empirical data as a mathematical equation, from which calculus can be used to determine many important characteristics. The goal of curve fitting is to find values for parameters that produce a curve closest to the data. 
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