Copyright © 2000-2004 by
The National Council of Teachers of Mathematics, Inc.
1906 Association Drive, Reston, VA 20191-9988
www.nctm.org

ISBN (print version) 0-87353-484-0

All rights reserved

Permission to photocopy all or portions of Principles and Standards for School Mathematics: An Overview is granted for educational purposes. Permission must be obtained when content from this publication is used commercially, when the material is quoted in advertising, when portions are used in other publications, or when charges for copies are made. The use of material from Principles and Standards for School Mathematics: An Overview, other than in those cases described, should be brought to the attention of the National Council of teachers of Mathematics.

Dynamic Geometry® and JavaSketchpad™ are registered trademarks of Key Curriculum Press and are used with the permission of the trademark holder.

Photographs by Kathleen Beall

Interactive applets programmed by Richard Wellman

Selected applets programmed by Nick Jackiw, Brian Keller, and The Shodor Education Foundation

Support for the creation of some of the interactive applets was provided by the National Science Foundation, Grant No. 9819107, with principal investigators Lawrence O. Cannon, James T. Dorward, Leo Edwards, and E. Robert Heal.

Portions of JavaSketchpad™ development were funded by the National Science Foundation (awards DMI 9561674 & 9623018).