Day 5 - Clip 1
Introducing The Bungee Jumper
After the lesson on day four, Ms. Coombs and Dr.
Thompson discussed the importance of making sure
that the ways of thinking entailed in using
finger tool were a part of all conversations. As
part of this, they discussed analyzing a
situation over small intervals of time. Dr.
Thompson’s goal was to ensure that students
reason about how the two quantities co-vary
instead of what the shape of the graph tells
you.
On day five of the lesson sequence, Mrs. Coombs
begins by asking the students to imagine someone
bungee jumping from a bridge. Ms. Coombs first
asks the students to think about how far they
would be from the ground after one “smidge” of
time. She then asks the students to think about
the differences in the distance in successive
smidges of time. In other words, how do the two
measures co-vary. The goal is to support
students’ ability to coordinate the complexity
of the situation by investigating it a “smidge”
at a time.
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