Math manipulatives and calculators
By: [prepared by Educational Research Service].
Contributors: Educational Research Service (Arlington, Va.)
Series: ERS info-file -- no. 180.1
Publisher: Educational Research Service
Place of publication: Arlington, VA
Language: eng
Subjects: Mathematics.; Calculators.; Manipulatives (Education)
Notes: Selected articles and materials intended to provide a general understanding of professional information and thinking on the topic.

Includes annotated bibliography and bibliographical references.