K-6 mathematics advanced trial materials
Subtitle: concept development through estimating
By: C.D. Carlow, project director.
Contributors: Carlow, Chester D.; Ontario Institute for Studies in Education.
Publisher: Ontario Institute for Studies in Education
Published: 1975
Place of publication: [Toronto]
Language: eng
Subjects: Mathematics -- Study and teaching (Elementary); Measurement
Other titles: Concept development through estimating and approximating.; Concept development through estimating.
Notes: Vol. 1 published first in 1973, revised in 1975.

Vol. 4 has subtitle: Concept development through estimating and approximating.

Cover title.