Her courses include elementary mathematics education classes specializing in general education, special education and urban education, as well as courses on equity and diversity. Ellen also works as an elementary mathematics consultant in both the Boston and Brookline Public Schools. Ellen is the co-author, with Nancy Schniedewind, of several teacher resource books including Open Minds to Equality: A Sourcebook of Learning Activities to Affirm Diversity and Promote Equity, published by Rethinking Schools. Ellen is also a co-author of Lenses on Learning a series of curriculum guides for school administrators about mathematics reform.