1. Teacher Discussion (1:19m)
The teachers discuss the benefits of cross-grade education.

2. Getting Started (3:22m)
Teacher Joe Dauray
The teacher provides students with cards to create patterns.

3. Interview, Project Director Meg Meyer (1:20m)
The program leader comments on informal, preformal and formal algebraic thinking.

4. Student Discussion (1:44m)
Students discover patterns and use manipulatives to explain their thinking.

5. Student Work (3:44m)
Students describe patterns and create their own work.

6. Teacher Dialogue (1:21m)
The teacher uses student ideas to build the lesson which leads to stating a formula.

7. Teacher Discussion (1:20m)
The teacher assesses the student use of the formula to calculate for larger numbers.

8. Getting Started (4:00m)
Teacher Cheryl Anderson
The textbook visual is used as a springboard for students to identify a pattern.

9. Student Activity (0:32m)
Students analyze their sketches and share their discoveries.

10. Student Activity (1:21m)
Students create visual models, describe the patterns, then state the formula.

11. Teacher Dialogue (1:52m)
Teacher guides a group to discover the current pattern, and the next addition.

12. Student Presents (2:19m)
A student shows several perspectives of the diagram to demonstrate the formula.

13. Teacher Assessment (1:25m)
Students compare equivalent formulas as the teacher assesses understanding.

14. Getting Started (0:58m)
Teacher Michael Comella
Teacher motivates students by asking them to estimate hair length.

15. Student Work (1:56m)
Students use textbook work to identify and extend patterns.

16. Interview , Project Director Meg Meyer (2:57m)
The project leader reflects on students' need to cycle through material in algebra.

17. Teacher Dialogue (6:47m)
Teacher leads students to state the formula in words, then substitue symbols.

18. Student Work (3:07m)
Students construct linear graphs, then analyze them and discuss differences.

19. Student Discussion (1:08m)
Students match formulas to a variety of situations.

20. Teacher Presentation (0:48m)
Teacher presents a final demonstration from the Guiness Book of World Records.

21. Teacher Reflections (0:48m)
Teaches praise the Mathematics in Context program.