Dear Teacher

摘要

What will you do when a student asks you for a pencil? This question was first posed to me at the 2010 Minnesota Spring Mathematics Conference in Duluth, Minnesota. "Really?" I thought, "We drove three hours and gave up our weekends to learn about this?" I wanted to have real teacher debates about the philosophy of learning. I wanted new activities I could use in the classroom tomorrow. But as the conversation began, I saw there was plenty to think about.