The purpose of this book is to enable teachers to arm young children with the mental tools necessary for learning, and also because the book itself is a tool for the teacher. Mental tools are ideas that we learn from others, modify, and then pass on. Vygotsky, his students, and colleagues have given us wonderful mental tools which we in turn hope to pass on to the readers of this book. Copyright (C) Muze Inc. 2005. For personal use only. All rights reserved.