Classroom Video Footage
Interview with Mary Hurley (mm:ss) Quicktime Player high • low get plugin Media high • low get plugin	Mary Hurley talks about her class, her teaching, and the idea of revision.
Math groups at work (34:35) Quicktime Player high • low get plugin Windows Media high • low get plugin	An example of a math group at work.
Student reflections (49:38) Quicktime Player high • low get plugin Windows Media high • low get plugin	Students talk about how math groups work for them.
Warm-up in math groups (mm:ss) Quicktime Player high • low get plugin Windows Media high • low get plugin	The first sequence of math period.
Review work in math groups (mm:ss) Quicktime Player high • low get plugin Windows Media high • low get plugin	Going over the warm-up. The second sequence of the math period.
Math quiz (mm:ss) Quicktime Player high • low get plugin Windows Media high • low get plugin	Taking and correcting a math quiz. The third sequence of the math period.
The Horse Problem (mm:ss) Quicktime Player high • low get plugin Windows Media high • low get plugin	Fourth graders working through a word problem.
Student Work Samples
student 1 math notebook download PDF	Complete record of student work (112 pages).
student 2 math notebook download PDF	Complete record of student work (54 pages).
student 3 math notebook download PDF	Complete record of student work (147 pages).
student 4 math notebook download PDF	Complete record of student work (111 pages).
math notebook rubric download PDF	Mary Hurley's rubric for assessing her students' math notebooks.
Other video collected during development:
math warm up and debrief: high quality for fast connections low quality for slower connections	In the classroom