Reviews by

• John Bransford
  Centennial Professor & Co-Director,
  Learning Technology Center,
  Vanderbilt University.
• Andrea diSessa
  Professor of Cognition and Development,
  University of California, Berkeley
• Jane Bowyer
  Abbie Valley Professor of Education and Department Head
  Director of NSF funded Local Systemic Initiative.
  Mills College.
• Joseph Krajcik
  Professor, Science education
  Center for Highly Interactive Computing in Education
  University of Michigan, Ann Arbor.