Vol. 8 No. 1 (1997) Articles Subtraction in the United States: An Historical Perspective PDF Susan Ross, Mary Pratt-Cotter Published 2015-04-30 Copyright Notice Copyright Notice × Authors contributing material to The Mathematics Educator retain copyright for their work. Authors consent to license their work for dissemination by TME. All contents of The Mathematics Educator are licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. Abstract N/A PDF
