How do you build with AI for a world as human, messy, and high-stakes as the classroom? This talk takes you inside the 0–1 journey of Goodnotes Classroom: from real teacher workarounds and classroom observations to fast prototypes, co-creation sessions, and product decisions shaped by educators themselves. We’ll share how human methods became the foundation for designing with AI as a new material, and why the best way to build faster may be to get closer to the people you’re building for.