Time for a filmstrip, class

Change Your Underwear Twice a Week:
Lessons from the Golden Age of Classroom Filmstrips

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Who doesn't fondly remember filmstrips?
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If you were really lucky, you would be the kid who gets to turn the knob that advances the film!
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Now there is a book that chronicles the filmstrip in all its glory...
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...and the lessons we all learned from this valuable educational tool.