This material is based upon work supported by the National Science Foundation under Grant No. 9911834. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.

Major support for the Institute for Inquiry has been provided by the National Science Foundation, California Department of Education, The Noyce Foundation, Marin Community Foundation, Stephen D. Bechtel, Jr., and the S. D. Bechtel, Jr. Foundation.

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