When it came time to help her first-graders through a tricky subtraction problem, Rosalie Carr reached for a new arsenal of colored chips, base-10 bars and mighty “number bonds,” the New Haven Independent reports. The hands-on math problem-solving took place this week in Carr’s first-grade classroom at the Fair Haven K-8 School on Grand Avenue. The new tools emerged as Carr and other elementary teachers try out a new method called Singapore math. In effort to get New Haven kids up to speed with their international counterparts, and in stride with a national Common Core State Standards initiative, the city is rolling out Singapore math to all classrooms in grades K to 5, starting this year with grades K to 2. The method is based on a curriculum introduced in 1992 in Singapore’s public schools. Teachers take a slow pace, focusing on thorough understanding of the fundamentals of math, with multiple approaches to the same problem…

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