Brian Engstrom wants to build a better mousetrap, but he's not out to get more rodents. Rather, the young teacher at Don Lugo High School in Chino hopes to capture his students' interest in engineering by showing them the discipline's real-world applications. The hands-on assignment is one of several that junior high and high school teachers are learning about this summer in Project Lead the Way, an intensive two-week program at Cal Poly Pomona offered in June and July designed to promote engineering education.