“I like to read about histories and dinosaurs and the universe!” she says wide-eyed. “Teacher, remember the video we watch? The universe is getting bigger and bigger as we talk!” Her arms stretch high over her head as she illustrates the vastness of the cosmos. Then she collapses into her chair, exhausted by the mysteries of our existence. “There could even be aliens,” she exhales. I see Hang three times a week, Saturday through Monday. I tutor her privately and in a group lesson. She’s also my Teacher’s Assistant for a raucous bunch of six-year-olds. Although she’s only one or two years their senior, she speaks and reads like a proper fifth-grader. Sometimes she takes her role as a TA very seriously, marching around…