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Thomas R. Lewis and Catherine H. Lewis

The “Math by the Month” activities are designed to appeal directly to students. Students may work on the activities individually or in small groups. No solutions are suggested so that students will look to themselves as the mathematical authorities, thereby developing the confidence to validate their work.

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Catherine Lewis and Rebecca Perry

An understanding of fractions eludes many U.S. students, and research-based knowledge about fractions, such as the utility of linear representation, has not broadly influenced instruction. This randomized trial of lesson study supported by mathematical resources assigned 39 educator teams across the United States to locally managed lesson study supported by a fractions lesson study resource kit or to 1 of 2 control conditions. Educators (87% of whom were elementary teachers) self-managed learning over a 3-month period. HLM analyses indicated significantly greater improvement of educators' and students' fractions knowledge for teams randomly assigned to lesson study with resource kits. Results suggest that integrating researchbased resources into lesson study offers a new approach to the problem of “scale-up” by combining the strengths of teacher leadership and research-based knowledge.

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Rebecca R. Perry and Catherine C. Lewis

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

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Scott Corwin, Michelle Cascio, Katherine Emerson, Laura Henn and Catherine Lewis

Our middle school mathematics department used lesson study to investigate how to introduce fractions division to our sixth-grade students. We highlight our learnings during the Study and Plan phases, describe our observations during the lesson, and provide tips for educators interested in using lesson study to study their own content.

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Catherine A. V. Lyons, Mike Donahoe, Frank Hawthorne, Agnes Herbert, Phillip S. Jones, Eunice Lewis, Nick L. Massey, Philip Peak and Lyman C. Peck

The Committee on Nominations and Elections presents its nominees for offices to be filled in the 1964 election. The vicepresidents are elected for a term of two years, whereas the directors are elected for a term of three years.