Teaching elementary arithmetic.
Thorpe, Cleata B.
Teaching elementary arithmetic. - New York Harper 1962. - 412 p. illus. - Harper's series on teaching .
Includes bibliography.
62007142 /L
Arithmetic--Study and teaching (Elementary)
QA135 / .T56
372.7
Teaching elementary arithmetic. - New York Harper 1962. - 412 p. illus. - Harper's series on teaching .
Includes bibliography.
62007142 /L
Arithmetic--Study and teaching (Elementary)
QA135 / .T56
372.7