Baron, Celia.

Thinking strategies : subtraction : building mastery of subtraction facts / Celia Baron. - Winnipeg : Portage & Main Press, c2004. - 265 p. : ill. ; 28 cm.

Added to collection April 2008 from Special Funding project.

ISBN: 1553790154 : $35.00

Nat. Bib. Agency Control No.: 20049061593

Subjects--Topical Terms:
Subtraction--Study and teaching (Elementary)
Subtraction--Problems, exercises, etc.
Soustraction--Étude et enseignement (Primaire)
Soustraction--Problèmes et exercices.

Dewey Class. No.: 372.7/2044