You are purchasing the Paperback format of this book. Avery, Ella, and Evan love wildlife...but some wildlife is just wilder than others! In this exciting mystery, these real kids, and new friends, encounter a whole lotta shakin’ going on in rattlesnake country! But when that shakin’ is coming from an about-to-strike rattlesnake—Y-Y-Yikes! Before they know it, the kids are mixed up in an adventurous mystery where clues require them to use their best science, technology, engineering, and math skills to find the answers! Can they solve the mystery before the rattlesnake strikes?! Before they know it, the kids are mixed up in an adventurous mystery where clues require them to use their best science, technology, engineering and math (STEM) skills to find the answers! Mystery books have always been a great higher-order, critical –thinking genre, and the "real Kid characters" in this series eagerly get into using high-demand STEM skills to solve each mystery!