Tested Studies in Laboratory Teaching, 2014, Volume 35
Rick Wiedenmann
Abstract
Action potentials are difficult for most students to comprehend. Ion channels open and close
in sequence. Sodium and potassium ions move across membranes in opposite directions. With all of
these details to learn, students can easily lose sight of the overall concept of depolarization as electrical
impulses travel down axons. This workshop showed how to build and use folk toys known as Jacob's
ladders to demonstrate depolarization/repolarization both kinesthetically and visually.
Keywords: action potential
University of Calgary (2013)
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