Children discover arithmetic
Stern, Catherine
Children discover arithmetic an introduction to structural arithmetic Catherine Stern and Margaret B. Stern. Illus. by Phillis Borea. Foreword by W. W. Sawyer. - Rev. and enl. ed. - New York Harper & Row [1971] - xv, 412 p. illus. (part col.) 22 cm.
Bibliography: p. 401-404.
74083624
Arithmetic--Study and teaching.
QA135 / .S84 1971
372.7/2
Children discover arithmetic an introduction to structural arithmetic Catherine Stern and Margaret B. Stern. Illus. by Phillis Borea. Foreword by W. W. Sawyer. - Rev. and enl. ed. - New York Harper & Row [1971] - xv, 412 p. illus. (part col.) 22 cm.
Bibliography: p. 401-404.
74083624
Arithmetic--Study and teaching.
QA135 / .S84 1971
372.7/2