Although I chuckled at my kindergarten students’ responses, I counted their eagerness to listen as a predictor of learner success. Years ago, I’d designed a lesson on evaporation. The five-year-olds noticed the water level in our uncovered classroom aquarium was lower than usual. I asked, “What do you think happened to the water?” Stacey guessed I’d scooped some out, and Adrian asked if the aquarium had leaked. Then Brian bounced up and down and yelled, “I know, I know. The fish drank it.” Stephanie folded her arms and said, “No, they didn’t, Brian. Mrs. Waters, tell us what really happened…