A Focus on Fractions av Marjorie M. Petit, Robert E. (Vermont Mathematics Institute USA) Laird, Caroline B. Ebby, Edwin L. (Norwich University USA) Ma

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<P>The third edition of this book offers a unique approach to making mathematics education research on the teaching and learning of fraction concepts readily accessible and understandable to pre-service and in-service K-8 mathematics teachers.</P><P>Revealing students¿ thought processes with extensive annotated samples of student work and vignettes characteristic of classroom teachers¿ experience, this book provides teachers a research-based lens to interpret evidence of student thinking, inform instruction and ultimately improve student learning. Based on research gathered in the Ongoing Assessment Project (OGAP), and updated throughout, this engaging and easy-to-use resource also features:</P><UL><P><LI>Two new chapters dedicated to understanding the OGAP Fraction Framework and Progression¿based on research conducted with hundreds of teachers¿to gather and interpret evidence of student learning along a learning progression, referenced throughout the book so readers can apply the conc