> * Is there truly a teaching technique, employing >manipulatives, that could be destructive to learning in math? > * In otherwords could manipulatives be "educational poison" >in the wrong hands? >
I have no serious study, but just my mathematician's instinct, which also seems to be the teacher's instinct of many people on this list -- manipulatives are for creating metaphors, analogies, models. Manipulative-based algorithms are not the way to go.
But some folks may be able to persuade me otherwise. I'll be interested in the responses.
==================================== Judy Roitman, Mathematics Department Univ. of Kansas, Lawrence, KS 66049 email@example.com =====================================