TY - BOOK AU - Streefland,Leen AU - Rainero,Ruth TI - Fractions in realistic mathematics education: a paradigm of developmental research SN - 0792312821 : U1 - 372.7 PY - 1991/// CY - Dordrecht, The Netherlands PB - Kluwer Academic Pub. KW - Fractions KW - Study and teaching (Primary) N1 - Includes bibliographical references and index ER -