Acknowledgments

June 1st, 2005

Thank you to the National Science Foundation for partial support to produce the material in this website under research grant no. 0138877. Any opinions, findings, and conclusions or recommendations expressed in this material are mine and do not necessarily reflect the views of the National Science Foundation.

Thanks as well to Michael Arbore and the Learning Technology Center in the College of Education at the University of Texas at Austin for indispensable help in setting up and maintaining this site.