Osborn, Roger.
Extending mathematics understanding [by] Roger Osborn [and others] - Columbus, Ohio : C. E. Merrill Books , 1961. - viii, 310 p. : ill. ; 24 cm.
Earlier ed. copyright 1960 under the titles Toward improved understanding of mathematics, part I and Toward improved understanding of mathematics, part II, by M. V. DeVault, published in 1960. Revised in 1969, published separately in two volumes under the titles Understanding the number system and Extending understandings of mathematics.
Bibliography: p. 264-271.
61013900
Mathematics--Study and teaching (Elementary)
QA135.5 / .O755
510 / OSE
Extending mathematics understanding [by] Roger Osborn [and others] - Columbus, Ohio : C. E. Merrill Books , 1961. - viii, 310 p. : ill. ; 24 cm.
Earlier ed. copyright 1960 under the titles Toward improved understanding of mathematics, part I and Toward improved understanding of mathematics, part II, by M. V. DeVault, published in 1960. Revised in 1969, published separately in two volumes under the titles Understanding the number system and Extending understandings of mathematics.
Bibliography: p. 264-271.
61013900
Mathematics--Study and teaching (Elementary)
QA135.5 / .O755
510 / OSE