Shay Valentine, an engineering student at the University of Nebraska-Lincoln, launched an engineering club for girls at a local school to help expose more students to science, technology, engineering and math. Once a week, the students take part in hands-on activities, ranging from creating ecosystems in a bottle to research on pollution. "We want them to be more assertive," teacher Linda Valentine said. "To think 'My ideas are worth something. I can speak, too. I can have a voice.' "