Lesson on Rolling Systems

Teacher: Lorena Reyes
Subject and grade level: Science, 2nd grade
Location: Oakland, CA
Curriculum: Lesson plan (adapted from the FOSS Curriculum's Balance and Motion Unit)
Brief Description: Science lesson on rolling systems (physical science)
Classroom context: 20 second grade students; all the students are considered English learners (4 Early Intermediate, 13 Intermediate, and 3 Early Advanced); elementary school in an urban area in Northern California.


Note: To honor the teachers and students represented in the video, please keep the complex nature of teaching in mind, and to be constantly aware that there is much information not available to the video viewer. Thus, it is neither respectful or helpful to jump to large generalizations about the practice viewed. We suggest using a language of tentativeness when discussing video records of practice, and cultivating a stance of questioning and inquiry when analyzing the teaching we observe.

Part 1: Prepare to Investigate (26:15 min.)

Part 2: Investigate, Talk, Write (26:09 min.)


  1. The unedited lesson video length was about 90 minutes long.
  2. This lesson was part of a larger unit on balance and motion that used FOSS curriculum materials.
  3. Prior to lesson, the class investigated ways to balance two dimension shapes made from tag board, and the motion of wheels of different sizes and axles moving down ramps.