ABSTRACT
Framing Discussion Below are two transcript excerpts taken from discussions in a seventh grade mathematics classroom during a unit on surface area and volume. Both excerpts come from the same unit, with the same teacher, and the same group of students. You have seen the rst excerpt near the end of the previous chapter. It was taken from a discussion that took place at the very beginning of a unit on surface area and volume. e second excerpt is taken from a discussion that takes place near the midpoint of the same unit. Use what you have learned from the two previous chapters about asking questions and assessing student responses to compare the dierences in the two transcript excerpts. Consider how discourse moves may vary at dierent points during the lesson. Aer you nish reading the two transcripts, answer the questions below.
