AN EXCERPT
February 28th, 2007
And now an excerpt from my dad’s manuscript which will be featured in an upcoming issue of Tech Directions magazine:
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Even the most appealing approaches used to relate electrical theory, like Pythagorean’s theorem, may still be construed meaningless by many students when there is a shortage of good examples around. Therefore, an electro-dynamic machine capable of delivering 160 decibels of raw sound power quickly captures a student’s attention, and goes on to serve as a platform to launch a myriad of lessons in electricity…
The scope of instructional activities involving subwoofers is scalable and can be varied widely to bring young learners in contact with seemingly mysterious electrical phenomena. Depth-of-instruction and learner activities can be controlled to meet teacher goals and objectives by breaking the subwoofer up into its teachable parts - electrical, mechanical, and acoustical…
The essentials of electromagnetic coupling, the discoveries of Carl Friedrich Gauss (1777-1855), Coulomb’s law of charges, Hall effect sensing, and the temperature coefficient of resistance and power compression, are only a few of many topics easily brought to students.
(From: TEACHING SCIENCE and ELECTRICITY WITH SUBWOOFERS by Robert J. Karns / Copywrite 2007)
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