Open AccessArithmetical Combinations
Author(s) -
J. H. Smith
Publication year - 1921
Publication title -
the elementary school journal/the elementary school journal
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 0.905
H-Index - 77
eISSN - 1554-8279
pISSN - 0013-5984
DOI - 10.1086/455053
Subject(s) - subtraction , mathematics education , fluency , psychology , computer science , arithmetic , mathematics