On a muggy afternoon in late June, about 20 kindergarten through second-grade teachers sat in a classroom on the third floor of Milwaukee’s North Division High School. The air conditioning wasn’t working properly, but the heat didn’t seem to bother the teachers, who were absorbed in a math lesson.
Danielle Robinson and Alicia Socha, two teachers in the district, led the lesson. “I went to the store to buy some fruit. I bought five apples and four bananas. How many pieces of fruit did I buy?” Socha asked.