Understanding the structure of elementary school mathematics /
Fendel, Daniel M.
Understanding the structure of elementary school mathematics / Daniel M. Fendel. - Boston : Allyn and Bacon, 1987. - xx, 488 p. : ill. ; 24 cm.
Includes bibliographical references and index.
020508821X
372.7 FEN
Understanding the structure of elementary school mathematics / Daniel M. Fendel. - Boston : Allyn and Bacon, 1987. - xx, 488 p. : ill. ; 24 cm.
Includes bibliographical references and index.
020508821X
372.7 FEN