1. Getting Started (1:09m)
Teacher: Retella Jones
The teacher helps to set the focus of the lesson by reviewing the geometric shapes of familiar road signs.

2. Group Demonstration (2:55m)
The teacher sets up a group demonstration in which cooperative groups use ribbon to create geometric shapes.

3. Student Activity (3:16m)
The teacher gives properties of a geometric shape, and students create the shape out of ribbon.

4. Student Dialogue (2:43m)
Students struggle to meet a definition and many in the class say that the solution is impossible.

5. Student Discussion (1:55m)
Students peer-coach to help a student who thinks the solution is impossible. The teacher reflects on the "send a scout" strategy.

6. Student Discussion (2:49m)
The group explores possible solutions. The project director remarks on the strength of the group process.

7. Interview (0:28m)
The MathScape program increases student understanding by helping to internalize mathematical meaning.

8. Student Work (2:07m)
Students read cluse and demonstrate reasoning and proof to create polygons from ribbon.

9. Teacher Demonstration (2:05m)
The teacher introduces the class to the "side/angle" game.

10. Teacher/Student Dialogue (6:32m)
The teacher coaches a student pair in the "side/angle" game.

11. Teacher Demonstration (4:10m)
The teacher introduces an activity in which ribbon shapes change. The project director remarks about how the topics in the program extend across grades.

12. Student Interviews (1:42m)
This is a series of students giving testimonials about their learning.