Instructions:

1. Before starting the video, mentally solve 29 x 4 and 29 x 12.
2. Watch the video introduction and pause the video after the teacher Nancy’s comments.

3. Reflect in writing about what mathematics these students using to do these computations.
4. Watch the video and observe the fifth-grade students sharing their thinking. Reflect on the questions below.

• What do you notice about the student approaches?
• What do you notice about the teacher’s interactions with the students?
• What do you notice about the students’ interactions with each other?
• Consider connections to Standard for Mathematical Practice #3: What is the teacher doing to support her students in learning to critique each other’s approaches?