of more than 20 MIT courses and student research and fieldwork opportunities; research groups spanning a variety of sectors and approaches; and a group of participatory innovation programs they call innovation practice. She also co-founded Innovations in International Health to facilitate collaboration among researchers around the world to develop medical technologies for resource-poor settings. She teaches the courses SP.721/11.025: D-Lab: Development and SP.722/2.722: D-Lab Design. In the past, she has taught 2.72: Elements of Mechanical Design. Smith encourages women to become engineers although she dislikes being referred to as a woman engineer. "Actually, because my class involves humanitarian engineering, I very rarely have more men than women. There have been times where there have been ten women and one man. This isn't surprising, given that women often want to see an application to what they're learning that they feel is worthwhile", says Smith. "But I'm not involved in any particular projects to encourage women engineers, because I dislike being referred to as a woman engineer. I don't like programs that single out woman engineers as particular achievers just for being women. I think that it should be coincidental." Inventions Smith's designs include the screenless hammer mill and the phase-change incubator, and she is also involved with the application of the Malian peanut sheller in Africa. She is also one of the founders of the popular MIT IDEAS Competition. In 2000 Smith won the Lemelson-MIT Student Prize that honors inventors who are also good role models. Motorized hammermill Smith invented a motorized hammermill that converts grain into flour which she successfully tested in Senegal. The problem with other motor-driven mills is that the screen that filters out rocks and coins could not be made locally and it could take several months to get a new screen. Smith's mill sifted out finished flour aerodynamically using a simpler design that could be manufactured locally by village blacksmiths. "It's nice when looking at things differently is a good thing, and not something where you get zero credit on a problem", Smith said. Smith planned to use some of the prize money from the $30,000 Lemelson-MIT Student Prize to produce and distribute the mills. Phase change incubator Smith worked on an incubator that requires no electricity. The device was originally designed to diagnose sexually transmitted diseases. The phase change incubator won the 1999 B.F. Goodrich Collegiate Inventor's Award for $20,000. Smith planned to start a