Inventing density
By: Eleanor Duckworth.
Contributors: North Dakota Study Group on Evaluation.
Series: The Monograph series of the North Dakota Study Group on Evaluation
Publisher: North Dakota Study Group on Evaluation, Center for Teaching and Learning, University of North Dakota
Published: 1986
Place of publication: Grand Forks, ND
Language: eng
Number of pages: 43
Subjects: Science -- Study and teaching (Elementary); Learning, Psychology of.
Notes: Includes bibliographical references.
"November 1986."