Research on elementary mathematics
By: by Marlyn [sic] Suydam and C. Alan Riedesel.
Contributors: Riedesel, C. Alan.
Series: PREP report -- no. 11
Publisher: U.S. Dept. of Health, Education, and Welfare/Office of Education, National Center for Educational Communication; U.S. Govt. Print. Off.
Published: 1972
Place of publication: Washington
Language: eng
Number of pages: 45
Subjects: Mathematics -- Study and teaching (Elementary)