In Book 3, readers take a rollicking elevator ride traveling the ribcage and spine. Along with main characters Dr. Bonyfide and Pinky, young learners meet new friends Vinny Vertebrae, Ruby Rib, Lumbar Jack, and others! This book features Know Yourself´s signature learning strategies like memory cues, puzzles, fun facts, and original comic strips. Our books inspire self-confidence from the inside out.