Thomas has taught science to students who arrive with a dozen different first languages and a dozen different levels of English, which is exactly what an RDAS classroom looks like. He keeps the science demanding while making the language reachable, so a child still finding their English stays inside the thinking. After school he runs a Dungeons & Dragons club, and that says something about how he teaches: hand a child a problem worth solving and a role worth playing, and they will read, calculate, and argue for hours.
