The number combinations, their relative difficulty and the frequency of their appearance in text-books,

Wedi'i Gadw mewn:
Manylion Llyfryddiaeth
OCLC:4285002
Prif Awdur: Clapp, Frank L. (Frank Leslie), b. 1877
Awduron Eraill: Huebner, Bernard P.
Iaith:English
Cyhoeddwyd: Madison, Wis. [1924]
Cyfres:University of Wisconsin. Bureau of Educational Research. Bulletin no. 2. July 1924.
Pynciau:
Arithmetic > Study and teaching.
Educational psychology.
Fformat:

Monograph

Note that CRL will digitize material from the collection when copyright allows.

Disgrifiad
Disgrifiad Corfforoll:120 p. diagrs. 23 cm.
Llyfryddiaeth:Bibliography: p. 118-120.

Eitemau Tebyg