Developing number sense in the middle grades
By: Barbara J. Reys, with Rita Barger [et al.] ; consultants, Diana Lambdin Kroll ... [et al.].
Contributors: Barger, Rita.
Series: Curriculum and evaluation standards for school mathematicsaddenda series.
Publisher: National Council of Teachers of Mathematics
Published: 1991
Place of publication: Reston Va
Language: eng
Number of pages: 56
Subjects: Number concept in children -- Study and teaching (Elementary)
Notes: Includes bibliographical references (p. 48-49).