Teachers' difficulties in arithmetic and their correctives.
Series: Illinois, University. College of Education. Bureau of Research and Service. Bulletin -- no. 18.; Bulletin (University of Illinois at Urbana-Champaign. College of Education. Bureau of Research and Service) -- no. 18.
Publisher: University of Illinois
Published: 1924
Place of publication: Urbana
Language: eng
Number of pages: 34
Subjects: Arithmetic -- Study and teaching.
Notes: Illinois. University. Bulletin, v. 21, no. 34.