Design Challenge Learning is a combination of project-based learning, design thinking, and the engineering design process that develops the innovator’s mindset through iteration. It’s a method of learning for which The Tech of Innovation in San Jose, California, is best known. The lessons on The Tech’s website, developed over the years by educators at The Tech, will help teachers lead their students through science and engineering challenges. They also make engaging and effective team-building activities for groups of teachers. The site includes single-session lessons of less than an hour, such as “Balloon Astronaut” (grades 2–8) and “Circle of Pong” (grades 3–12); single-session lessons of one to two hours, such as “Fire Brigade” (grades 3–6) and “Pump It Up” (grades 4–6), as well as multisession lessons, such as “Bobsled Blitz” (grades 3–12) and “Farming in Ancient Mesopotamia” (grades 6–8).