

The Examining Features of Shape Casebook was developed as the key resource for participants' Developing Mathematical Ideas seminar experience. The thirty-three cases, written by teachers describing real situations and actual student thinking in their classrooms, provide the basis...

What are the "big ideas" in elementary school mathematics? How do students understand them? How can teachers best offer help and support as their students grapple with these ideas? These and other questions about the practice of teaching K-8 mathematics are the focus of Developing...