From 1990 to 1993, 200 educators, primarily classroom teachers of computers, mathematics, and science, participated in the Computer Equity Expert Project. After a seminar on gender equity in these fields, the educators returned to their schools and taught workshops to their colleagues. Together, workshop participants and their colleagues developed strategies to increase the participation of girls in mathematics, science, and computer fields. These strategies are presented, along with their underlying principles, which are: (1) focus specifically on girls; (2) design activities around girls' interests; (3) emphasize usefulness; (4) highlight the social aspect; (5) watch language for sex stereotypes; (6) eliminate biased practices; (7) spread the word; and (8) do it all again next year. Strategies based on these principles are presented for classroom use, extracurricular activities, educational policy, and outreach efforts. Fourteen resources are listed for educator use. (SLD)