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Ellen Clay

Ellen Clay, Ph.D.

Assistant Professor

Program Affiliation:

M.S., Mathematics Learning and Teaching
Ph.D, Educational Leadership and Learning Technologies


Ph.D., M.S., and B.A., University of Louisiana, Lafayette

Areas of Expertise:

  • Mathematics
  • Teaching and learning of mathematics
  • Mathematics teacher education
  • Making mathematics thinking visible

Research Interests:

  • Supporting teachers in their development of mathematical ideas
  • Transitioning teachers’ mathematical ideas into urban classrooms

Professional Experience:

  • Drexel University
  • University of Pennsylvania, Graduate School of Education
  • School District of Philadelphia
  • Young Scholars Charter School
  • Cabrini College
  • Richard Stockton College of New Jersey
  • St. John Fisher College
  • Richmond College, England

Funded Proposals

  • Principal Investigator, Learning Mathematics: Knowledge for Teaching in Today's Diverse Classrooms, Pennsylvania Department of Education, Eligible Partnerships Postsecondary Grant for Special Education Teachers to Become Highly Qualified, ($333,000; 2009-2011).
  • Senior Personnel, The Math Forum’s Virtual Fieldwork Sequence (W. Shumar, PI), NSF DUE: CCLI Phase 2. ($498,100; 2007-2011).   


  • Clay E. & Silverman, J., (2012). “Understanding Online Asynchronous Collaboration in Mathematics Teacher Education," Zentralblatt für Didaktik der Mathematik – The International Journal on Mathematics Education, 44(7).
  • Clay, E. & Miller, M., (2012). “Preparing Special Education Teachers to Become Highly Qualified in Mathematics, Post-secondary education and technology:  A global perspective on opportunities and obstacles to development, R. Clothey, S. Austin-Li and J. Weidman (editors), Palgrave MacMillan.
  • Silverman, J & Clay, E., (2011). “Developing Teachers’ Mathematical Knowledge for Teaching through Online Collaboration,” Teaching Mathematics Online: Emergent Technologies and Methodologies. A. Juan, M. Huertas, S. Trenholm, and C. Steegmann (editors), IGI Global.
  • Silverman, J. & Clay, E. (2010). “Examining Mathematics Teacher Education: Online Asynchronous Collaboration and the Development of Mathematical Knowledge for Teaching,” The Teacher Educator, 45(1), 54-73.
  • Cerreto, F., Clay, E., & Quinn, J. (2002) “Applying A Cognitively Guided Faculty Development: A Case Study,” The Review for the Study of College Teaching, 1(1): 14-29.