Elements of difficulty in the interpretation of concrete problems in arithmetic
By: by L. L. Hydle ... and Frank L. Clapp ...
Contributors: Clapp, Frank L. b. 1877, joint author.
Series: University of Wisconsin. Bureau of educational research. Bulletin,; no. 9
Published: 1927
Place of publication: Madison, Wis
Language: eng
Number of pages: 84
Subjects: Arithmetic -- Study and teaching.