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Day 6 clip 1: How to Talk about Covariation

Prior to day six, Ms. Coombs and Dr. Thompson discussed the need for classroom rules to guide discussions about moving objects. 

Day 6 clip 2: Exploring the Bungee Jumper Video Frame By Frame

In this segment, also from day six, the class continues discussing the video of a bungee jumper.

Day 6 clip 3: Ms. Coombs Discusses Students' Graphs

In this third video clip from day six, Ms. Coombs asks the students to watch a replay of the bungee jumping video while referring to three student-generated graphs of the relationship of changes in time and changes in vertical distance from the ground. 

Day 6 clip 4: How Graphs Show Speed

In this fourth segment from day six, Ms. Coombs asks students to refer to the frame-by-frame version of the bungee jumping video in order to discuss how the student-generated graphs show speed.

Day 6 clip 5: Discussion of Students' Thinking and How It Arose

After discussing Day Six with Dr. Thompson, Ms. Coombs agrees that the students appear to be graphing the path of the jump instead of thinking about co-varying quantities.   

Day 6 - Clip 2
Exploring the Bungee Jumper Video Frame By Frame

In this segment, also from day six, the class continues discussing the video of a bungee jumper. In this discussion, Ms. Coombs steps through the video in 1/30th of a second frames and asks the students to describe the bungee jumper's change in vertical distance between frames. This allows her to focus the students on small amounts (“smidges”) of time. It also allows her to ask the students to compare the relative changes across smidges of time.

 

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