What makes a great teacher great? That's the question at the heart of 50 Great Teachers, from the NPR Ed Team. Sarah Hagan has a passion for math, and the pi-shaped pendant to prove it. The ...

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20150309_atc_the_teacher_who_believes_math_equals_love.mp3?orgId=1&topicId=1013&aggIds=359618671&d=476&p=2&story=376596585&t=progseg&e=391915103&seg=12&ft=nprml&f ...

NPR Ed is celebrating 50 Great Teachers. Today: The story of a young algebra teacher in Oklahoma oil country, who has taken an unorthodox approach... The Teacher Who Believes Math Equals Love What ...