That range of emotions is what Kathleen Tsai, a chemistry teacher who facilitated the exercise, expected. “It’s frustrating but then you have a sense of fulfillment,” she said during a group reflection at EduCon 2020, a school innovation conference. “The amount of frustration I feel when I do this is the same as my students feel when they’re doing algebra. I’m sweating when I’m stacking cups; they’re sweating when they’re doing homework.”