Buffie, Edward G. Mathematics; strategies of teaching / [by] Edward G. Buffie, Ronald C. Welch [and] Donald D. Paige. - Englewood Cliffs, N.J. : Prentice-Hall, c1968. - vii, 230 p. : illus. ; 24 cm. - Modern elementary methods series. . Includes bibliographies. LCCN: 68024180 Subjects--Topical Terms: Mathematics--Study and teaching (Elementary) LC Class. No.: QA135.5 QA135.5 / .B8 / .B9 Dewey Class. No.: 372.7