Like Ken and Vera, I feel almost sure it originates with Bank Street, and I
suspect Lucy Sprague Mitchell herself. But this is a darn good question,
since the phrase is almost ubiquitous, appearing in many discourses, as I
found when I did a web search.
Randy Bomer
Indiana University
----------
>From: Ken Goodman <kgoodman@u.arizona.edu>
>To: xmca@weber.ucsd.edu
>Subject: Re: Origin of phrase "teachable moment"?
>Date: Thu, Feb 17, 2000, 1:24 PM
>
> Yetta Goodman has been searching for roots of "teachable moment" and has
> found it in the early progressive education writings (1st quarter of the
> century)- which would of course include the Bank Street folks. She has
> yet to find a source for the phrase cited in any use of it. It's
> possible that Dewey may have used the phrase first.
>
> Ken Goodman
>
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