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Lesson Makeovers: 3 Big Ideas

For Teachers

After looking at dozens of lessons folks sent in, I came up with three big ideas to address.

Rounding Numbers (But Not To 10)

What could we possibly do to make rounding more interesting for students who already get it? In this series, students consider how they might round to values other than “the nearest 10.” How, for example, do we round to the nearest 9? 7? 15?