Gr 4-8--Solid, clearly written definitions of commonly used terms are the mainstay of this revision. "Organized to reflect the different areas of mathematics taught in elementary and junior high schools," entries are arranged alphabetically within chapters such as "Whole Numbers and Operations," "Algebraic Ideas," and "Problem Solving." Students will have to use the index in order to find information. The examples are reasonably complicated and provide good learning reinforcement. Some strategies, such as the windowpane method of multiplying, may require adult assistance. Many entries include one or more examples; for instance, students researching "Division Strategies" will find advice on using a multiples table, repeated subtraction, and manipulatives (tangible aids such as paper squares). There are numerous references to manipulatives in the definitions, and the book includes a 40-page chapter on learning with their assistance, which is new to this edition, as are many additional terms and helpful conversion tables. Also new is full color, which is pleasing to the eye, and is complemented by a simple layout with ample white space. This title is worth purchasing even for libraries that own a previous edition, and is a worthy addition to classroom shelves as well as it gives teachers another tool for teaching these sometimes elusive concepts.--Stephanie Farnlacher, Trace Crossings School, Hoover, AL[Page 87]. (c) Copyright 2011. Library Journals LLC, a wholly owned subsidiary of Media Source, Inc. No redistribution permitted.