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Behr, Merlyn J.
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Order and equivalence of rational numbers: a clinical teaching experiment
Behr, Merlyn J.
;
Wachsmuth, Ipke
;
Post, Thomas R.
;
Lesh, Richard
In: Journal for research in mathematics education, Vol. 15 Issue 5, page 323-341
Research problems in mathematics education - III
Behr, Merlyn J.
;
Bernard, John
;
Briars, Diane
;
Bright, George W.
;
Threadgill-Sowder, Judy
;
Wachsmuth, Ipke
In: For the learning of mathematics, Vol. 4 Issue 3, page 22-23