Based on the books Rosie Revere, Engineer; Iggy Peck, Architect; and Ada Twist, Scientist by Andrea Beaty with illustrations by David Roberts. Ms. Greer’s classroom includes three inquisitive out-of-the-box thinkers. Rosie Revere has big dreams. Iggy Peck has a relentless passion for architecture. And Ada Twist’s curiosity can drive her teacher crazy.