Sonoma County Office of Education

RAAFA Video Archive

RAAFA Video Archive

Redwood Area Algebra For All (RAAFA) was a California Math Science Partnership project administered by the California Math Project: North Coast, Sonoma County Office of Education, and Sonoma State University. The project utilized technology-based strategies like podcasts and Internet-accessible video clips to extend teacher expertise. Here are some of the resources developed during the three-year project, which concluded in 2008.

Student Interview

Student Interview, Division of Fractions | Feb 2008This is part of a student interview series conducted prior to planning a lesson on the division of fractions.



Lesson, Division of Fractions | Feb 2008Here is one portion of the five-day lesson developed to meet the needs uncovered during student interviews.


Animation, Parts of a Cube – This simple animation front-loads terms critical to understanding the concept of volume for English learners

Interview, Promoting Discourse – Edith Prentice Mendez, PhD, examines how promoting discourse can impact student learning

Lesson, Geometric Figures – Fourth-graders in a bilingual classroom are shown talking about shapes

Presentation, Observing for Evidence – Dr. Patrick Callahan provides a structure for identifying evidence of mathematics thinking

Scaffolding, Whole to Parts, Parts to Whole – This clip introduces English learners to the vocabulary of “part-whole” relationships

Student Discussion, Perimeter – Bilingual grade 6-8 students describe patterns they’ve observed in rectangles with the same area but different perimeters

Student Discussion, Perimeter – Two ninth-graders contradict our expectation that the key challenge for bilingual students is to learn mathematics vocabulary

Student Interview, Discussing Math – This interview illustrates how second-language learners learn and talk about mathematics

Student Interview, Fractions 1 – A student discusses whether shapes have to be congruent to have equal areas

Student Interview, Fractions 4 – This interview shows the difference between a teacher’s assumptions and what students actually understand

Student Interview, Paper Folding Lesson – A fifth-grade student shows how mathematics is embedded in paper-folding activities

RAAFA Audio Archive

Available as zipped mp3 files for download

Reading, Beyond Words: This chapter from Assessing Mathematical Proficiency by Judit Moschkovich raises questions about assessments for English learners

Reading, Facilitating English Learner Participation: This article reviews findings on strategies for engaging English learners in mathematics learning

Reading, Two Types of Reflection: In this excerpt from Process Reflection in Pre-Service Lesson Study, Thomas Ricks divides reflection into two categories

Reading, A World of Difference: This article suggests that educators focus on ensuring that students solve challenging mathematical problems

Amie Carter, Sonoma County Superintendent
"The mission of the Sonoma County Office of Education is to foster student success through service to schools, students, and the community." - Amie Carter, Sonoma County Superintendent