Gr 2-4–These well-crafted books use diagrams, charts, and maps to illustrate STEM concepts in sports, such as shapes, statistics, and forms of measurement. ­Angles and arcs can be seen in sports equipment and playing fields. In Shape of the Game, a clearly labeled diagram asks readers to discern “how many polygons are on a baseball field.” Innovative advances in equipment, such as football helmets, can make sports safer. A colorful map in Engineering a Win locates the “top six loudest stadiums” in the U.S. Each book includes a follow-up activity. Every Second Counts suggests readers time themselves in an activity they enjoy, such as running, and chart their times over five days. VERDICT This series is sure to win fans among teachers and young readers alike!