Stay on the Ball with Musser, Burger, Peterson! In today's fast-paced world it's sometimes hard to keep up. Fortunately, you can always turn to the texts you trust to stay on the ball! This Update Edition of Mathematics for Elementary Teachers: A Contemporary Approach, Fifth Edition is specially designed to greet the new NCTM 2000 Standards. Throughout the text, marginal notes list the Standards at the point in the discussion where the appropriate standard applies. Plus, the endpapers of this edition include a full detailed listing of the new Standards. This update edition also features another exciting new development-a CD-ROM featuring many virtual activities that bring topics to life! The CD features an activity for each chapter in the book. These activities emphasize problem-solving and exploration as they help develop the concepts of the chapter. For example: Chapter 1 features the famous "Find the Counterfeit Coin" activity where students use a virtual balance scale to find the fake coin. The Fraction Applet for Chapter 6 allows students to use various models to construct meanings for fraction equivalence. For Chapter 12, the CD-ROM offers a Plane Intersection applet that lets students control a plane slicing a variety of solids. And about the Balls...; On the cover of this edition you'll find the infamous Kepler Conjecture, a problem that stumped scientists for 400 years. In 1998 a solution was proposed. The story of how the solution was achieved illustrates the quest to tackle the unsolved mysteries of mathematics. It also demonstrates how patient work and flashes of inspiration often lead to solutions. You'll find complete details on this tantalizing mathematical problem inside the book.Gary L. Musser is the author of 'Mathematics for Elementary Teachers: A Contemporary Approach, 5th Edition Update', published 2000 under ISBN 9780471388982 and ISBN 047138898X.