About the Author
Barbara Means is directs of the Center for Technology in Learning at SRI International, an independent nonprofit research organization based in Menlo Park, California. She also codirects the assessment research team of the Center for Innovation Learning Technologies, a center funded by the National Science Foundation.
William R. Penuel is a senior educational researcher at the Center for Technology in Learning at SRI International.
Christine Padilla is assistant director of SRI's Center for Education Policy.