Elementary school mathematics : a guide to current research /
Callahan, Leroy G,
Elementary school mathematics : a guide to current research / Leroy G. Callahan, Vincent J. Glennon. - forth edition. - Washington : Association for Supervision and Curriculum Development, (c)1975. - xi, 188 pages : graphs ; 23 cm.
Previous editions by V. J. Glennon and L. G. Callahan. Published in 1952 and 1958 under title: What does research say about arithmetic?
75029896
Mathematics--Study and teaching (Elementary)
QA135 / .E446 1975 QA135
Elementary school mathematics : a guide to current research / Leroy G. Callahan, Vincent J. Glennon. - forth edition. - Washington : Association for Supervision and Curriculum Development, (c)1975. - xi, 188 pages : graphs ; 23 cm.
Previous editions by V. J. Glennon and L. G. Callahan. Published in 1952 and 1958 under title: What does research say about arithmetic?
75029896
Mathematics--Study and teaching (Elementary)
QA135 / .E446 1975 QA135