Mathematics today. [Level orange. Grade 4] / curriculum and instruction, Janet S. Abbott, David W. Wells ; consulting educators, Barbara A. Jacobs [and others].

Published: Orlando : Harcourt Brace Jovanovich, [1987]
Copyright Date: ©1987
Edition: 2nd ed.
Physical Description: volumes : color illustrations ; 26-28 cm
Additional Creators: Abbott, Janet S., Wells, David W., Jacobs, Barbara A., and Harcourt Brace Jovanovich