UC Santa Cruz

Students often voice computations during group discussions of mathematics problems. Yet, this type of private speech has received little attention from mathematics educators or researchers. In this article use excerpts from middle school students' group mathematical discussions to illustrate and describe "computational private speech." We analyze four examples of computational private speech using lenses from neo-Vygotskian psychology, sociolinguistics, and distributed cognition. Our analyses of computational private speech challenge the individualistic developmental assumptions of some neo-Vygotskian theories of private speech, and we show how this form of private speech can serve socio-cognitive functions during group mathematical discussions. Copyright © Regents of the University of California on behalf of the Laboratory of Comparative Human Cognition.