Children discover arithmetic
Stern, Catherine
Children discover arithmetic an introduction to structural arithmetic Foreword by Marguerite Lehr. - New York Harper & Row [1949] - xxi, 295 p.
Bibliography: p. 291-302.
91083624
Arithmetic--Study and teaching.
QA135 / .S84 1949
372.7/2
Children discover arithmetic an introduction to structural arithmetic Foreword by Marguerite Lehr. - New York Harper & Row [1949] - xxi, 295 p.
Bibliography: p. 291-302.
91083624
Arithmetic--Study and teaching.
QA135 / .S84 1949
372.7/2