1. Departments of *Biology and
2. Genome Consortium for Active Teaching, Davidson College, Davidson, NC 28035-7118;
3. Howard Hughes Medical Institute Biotechnology Education and Outreach Program, University of Illinois at Urbana-Champaign, Urbana, IL 61801;
4. Mathematics and
5. Hinsdale Central High School, Hinsdale, IL 60521; and
6. Montgomery County Public School District, Rockville, MD 20850