"...a significant contribution to the debate about educational ends and means, not only in relation to science but to the curriculum more generally, as the principles based on Vygotskian sociocultural theory are not subject-specific....The authors are all renowned scholars in their fields and each makes a significant contribution to the whole....I welcome the various insightful explorations of what enables and constitutes educationally productive science talk."—Gordon WellsUniversity of California at Santa Cruz"This book makes an important statement and contribution....I applaud the editors for their efforts to design a book that respects postmodern critique of the unitary subject and which extends understanding of the construction of the subject and subject-object relations in and through discourse and language....The general questions raised in the book are the central vortex of questions pertinent to understanding and improving all subject matter education."—Lesley A. RexUniversity of Michigan