Encourage her to learn how to repair the loose chain on the bicycle, program the VCR, take apart a broken appliance, fix the toaster, change a tire. Work with her as she does these things. Encourage girls to take high-level math and science courses. Math is the gateway to computer careers. Hire a tutor if necessary.
Girls often view anything less than an A as failure, so pour on the encouragement.
Engage her in projects that develop spatial reasoning and analytical skills. Older girls may enjoy tinkering with a chemistry set or building a robot from a kit. Better yet, have her do these things with her girlfriends. Be savvy about safety and privacy online. Check out Web sites your children are visiting and drill them not to give out their name, address or city.