Antoinette Villarin’s students return to their groups to discuss and share their thinking about the relationship between graphs showing rate of change. She challenges them to try to find the two graphs out of four with the correct combination to describe the same container. As the student partners work, Antoinette circulates around the room engaging pairs in questioning.

8th Grade Math - Representing Constant Rate of Change*Antoinette Villarin, Westborough Middle School, South San Francisco Unified School District, South San Francisco, California*

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- Lesson: Comparing Lines and Linear Equations by the Mathematics Assessment Project Web Link
- Handout: Recording Sheet and Gallery Walk Guide Word Document
- Student Work: The Race PDF
- Student Work: Graphs PDF
- Student Work: Matching Poster PDF
- Student Work: Recording Sheet and Gallery Walk Guide PDF
- Student Work: Exit Ticket PDF

Transcript coming soon

It's hard when you're walking around and you can’t hear every student pair. I appreciated the videotaping. The videotaping allowed me to observe student thinking from the opposite end of the room. Normally, when I can’t observe every pair, I have to be attuned to what students are saying. Things like “This is too hard” or perceived difficulties remind me to check in with those students eventually.