How Can Students Learn Fraction (De)Composition?

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Examine with us how students “understand fractions as numbers” and “view fractions” as being built out of unit fractions” two emphases of CCSSM.

Contributor Notes

Rebecca R. Perry,, works in the San Francisco, California, office of WestEd, a nonprofit research and development agency. Her research and evaluation interests focus primarily on K–grade 8 mathematics policy implementation, teacher professional development, and human and organizational learning.

Catherine C. Lewis,, has researched teaching and learning in Japanese schools for more than thirty-five years, translating many Japanese materials and approaches for use by educators ( She works in the School of Education at Mills College in Oakland, California.

(Corresponding author is Perry author is Lewis
Teaching Children Mathematics


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