Praveen Subramani ’09 (top) and Xiao Xiao ’09 (center) explain the operation of their project, “Pittura Viva,” to Electrical Engineering and Computer Science Professor Seth Teller (not pictured) as his daughter Sophia (bottom) plays with the program’s interface. Eta Kappa Nu, the honor society for Electrical Engineering and Computer Science students, held its annual Student Project Expo yesterday afternoon in the Vannevar Bush Room.