Intro self, course Students ask questions about course, self RoundTable to generate questions, at least two Q's per person, have paper already on table. . . . Intro quiet-signal . . . Demo. how to time. Think, RoundRobin possible procedures.
Students try to answer question, working again in pairs.
Return to relationship between length and period. Hang pendula in room. May need to take class time to discuss constructing graphs. Read Graika and Hazen.