See larger Students and teachers play triangle math during 'muffins and Math hour at Golden Gate Elementary School. Triangle math focus on fast thinking multiplication and division. Photographed on November 6, 2009. © 2009 Kelli Stanko

Photo by KELLI STANKO

Students and teachers play triangle math during "muffins and Math hour at Golden Gate Elementary School. Triangle math focus on fast thinking multiplication and division. Photographed on November 6, 2009. © 2009 Kelli Stanko

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