Brain-Powered Lightbulb: Knowledge Transmission?

by: Thomas O'Brien

This activity explores the closed, battery-powered circuits that convert chemical potential energy to electrical energy to light energy. Since Edison’s invention of the lightbulb, it has been commonly used as a visual symbol of intelligence, ingenuity, and “bright ideas,” expanding on an ancient association of light with knowledge and understanding. As a visual participatory analogy, the message is that the teacher’s “light” cannot simply be given to students but rather serves as a spark to activate students’ attention and catalyze cognitive processing.


Type Book ChapterPub Date 3/1/2010Stock # PB271X_15

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