The teaching of arithmetic and elementary mathematics /
Sumner, William Leslie, 1904-
The teaching of arithmetic and elementary mathematics / W.L. Sumn er. - Oxford : B. Blackwell, 1938. - 4 p. 1., 255 p. : ill. ; 21 cm.
Includes bibliographical references (p. 251-255).
Arithmetic --Study and teaching.------
Mathematics --Study and teaching.------
510.07
The teaching of arithmetic and elementary mathematics / W.L. Sumn er. - Oxford : B. Blackwell, 1938. - 4 p. 1., 255 p. : ill. ; 21 cm.
Includes bibliographical references (p. 251-255).
Arithmetic --Study and teaching.------
Mathematics --Study and teaching.------
510.07