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Causal Patterns in Simple Circuits Lesson 4: Why Does the Bulb Light When There is Flow?
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Lesson 4: Why Does the Bulb Light When There is Flow?
This lesson engages students in thinking about resistance as a passive type of causality, and helps them to view resistance on a continuum between conductivity and insulation. There are similar lessons in many science programs to help students learn about the nature of resistance. However, this one is modified to offer systematic inquiry into variables that affect resistance and to help students understand the passive causality involved.
Lesson 4 Table of Contents
- Understanding Goals
- Background Information
- Lesson Plan
- Resources for Lesson 4
- What Contributes to a Good Filament?: Testing Variables sheet (PDF: 72 KB / 1 page / 8½" X 11")
- Diagram of a Circuit Tester (PDF: 78 KB / 1 page / 8½" X 11")
- Photograph of a Circuit Tester (PDF: 141 KB / 1 page / 8½" X 11")
- Endnotes for Lesson 4
©2004, President and Fellows of Harvard College, Understandings of Consequence Project