Marcia C. Linn is professor of development and cognition specializing in education in mathematics, science, and technology in the Graduate School of Education at the University of California, Berkeley. A fellow of the American Association for the Advancement of Science, she investigates science teaching and learning; gender equity; and design of learning environments. In 1998, the Council of Scientific Society Presidents selected her for its first award in educational research. From 1995-1996 and 2001-2002 she was a fellow at the Center for Advanced Study in the Behavioral Sciences. In 1994, the National Association for Research in Science Teaching presented her with its Award for Lifelong Distinguished Contributions to Science Education. The American Educational Research Association bestowed on her the Willystine Goodsell Award in 1991 and the Women Educator's Research Award in 1982. Twice she has won the Outstanding Paper Award of the Journal of Research in Science Teaching (1975 and 1983). She has served on the board of the American Association for the Advancement of Science, the Graduate Record Examination Board of the Educational Testing Service, and the McDonnell Foundation Cognitive Studies in Education Practice board. Her publications include Computers, Teachers, Peers--Science Learning Partners , with S. Hsi (Lawrence Erlbaum Associates, 2000); WISE Science with J. D. Slotta in Educational Leadership , (2000); The Tyranny of the Mean: Gender and Expectations, in Notices of the American Mathematical Society (1994); and Designing Pascal Solutions , with M. C. Clancy (W.H. Freeman, 1992).