Abstract MIT Technology Review lists sensor networks as one of “Ten Emerging Technologies That Will Change the World” [1]. This paper extends our earlier paper [7], and describes three additional lab exercises, derived from the TinyOS tutorials and using MicaZ motes, that are suitable for activity-driven teaching of sensor networks to undergraduate students. One exercise includes some actual coding, and in another exercise, a mote also logs data to local storage, and reports it back to the PC at a later time. We describe our experiences, lessons and code alterations.