One interesting addition to Doug Lemov’s Teach Like a Champion series in his third edition (Teach Like a Champion 3.0) is his notion of a mental model. He introduces the idea like this: “In a typical lesson you decide, often quickly. Then you decide, decide, and decide again. You are a batter facing a hundred pitches in a row…What do you need to decide quickly, reliably, and well, while thinking about other things under a bit of pressure in the form, of, say, twenty-nine restless students, twenty-five minutes’ worth of work left to get done, and a ticking clock to
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