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The Teacher Who Believes Math Equals Love

07:56
For her trigonometry class, Sarah Hagan (center) uses everything but the kitchen sink: a flower pot, garbage basket, rolls of tape, rubber balls, even loose spaghetti. (NPR)
For her trigonometry class, Sarah Hagan (center) uses everything but the kitchen sink: a flower pot, garbage basket, rolls of tape, rubber balls, even loose spaghetti. (NPR)

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