Norfolk Public Schools in southeastern Virginia serves 35,000 students with 36 elementary schools, 9 middle schools, and 1,500 teachers. In 1999, the district developed a fi ve-year initiative to improve the quality of mathematics instruction at the kindergarten through grade 12 levels. “At that time, our average elementary-level math scores were dismal,” explains Math Coordinator Denise Walston. “Grade fi ve results were particularly poo

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