Perfect for a one-semester course, the Essentials version of Musser, Burger & Peterson's best-selling textbook brings together many different facets to form one tightly integrated and concise whole in 13 chapters. The textbook, eManipulative activities, on-line problem-solving tools, and an expanded resource-rich Web site all work together with one primary goal in mind: giving your students a rich and rewarding learning experience! The authors' unrelenting focus on this goal has helped establish their text as the leading mathematics text for elementary and middle school educators.