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My friend and former colleague Stephen Bloom at the University of Iowa wrote an entire book about this experiment and the teacher who developed it. It’s a very interesting read and I recommend it:

https://www.google.com/search?q=stephen+bloom+brown+eyes&ie=UTF-8&oe=UTF-8&hl=en-us&client=safari

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A social studies teacher in Waterloo, IA, replicated this in his classroom.

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