ISBN 1138816442 books & textbook
A Focus on Fractions: Bringing Research to the Classroom (Studies in Mathematical Thinking and Learning Series)
Petit, Marjorie M. Laird, Robert E. Ebby, Caroline B. Marsden, Edwin L.
Routledge /2015-07-27 Paperback / 220 Pages
isbn-10: 1138816442 / isbn-13: 9781138816442
