Gr 4–7—Pedestrian best describes this set, which shares a common five-chapter format. The introductory first chapter is followed by the park's geology, flora and fauna, human history, and current status and challenges—all standard topics. Primary source excerpts and sidebars add supplemental information, and a final "Stop and Think" section suggests research and writing projects. Images are not always in line with the text: Yellowstone's geology chapter doesn't have a single photo of its "hydrothermal wonders," and the map of the bighorn sheep range in the Yosemite area doesn't have an accompanying photo of said sheep. Uninspired text and illustrations limit this series' ability to communicate the marvels and beauty of these spectacular places. VERDICT No improvement on extant sets, including ABDO's 2005 "National Parks."