Go behind the scenes and learn what it takes to be a rock climber, surfer, and go-kart racer! This set of nonfiction books feature high-interest TIME FOR KIDS® content and introduces 4th grade students to different extreme sports as well as ways to cope with stress. Through detailed images, informational text, and upper-level features such as chapter format, a glossary of terms, and an index, these books help fourth grade students build math and literacy skills. Titles in this math book set include: Defying Gravity! Rock Climbing; Hang Ten! Surfing; Final Lap! Go-Kart Racing; Life in Numbers: Stressed Out!