College-Prep Physics: A student is investigating pitch vs. tube length for Boomwhackers. The pitch (frequency, in hertz) is measured with a Vernier microphone and FFT analysis in LoggerPro. Yesterday he did it for air-filled boomwhackers with an end-cap. Today he’s repeating the experiment using boomwhackers with helium. Will there be a difference?
College-Prep Physics: Used the long slinky to generate discussion about how we might make the waves travel faster down the slinky. That lead into a dissucssion about frequency, wavelength, wave source, and wave medium. Then students used constant speed buggies, adding machine tape, markers, rulers, and a metronome app on their phones to experimentally determine the relationship between frequency and wavelength. (Sorry, I’m reposting the video from last year.) Also showed this I Love Lucy clip:
Conceptual Physics: Students finished building and testing their modified bike light circuits and began making their final annotated circuit diagrams.
AP Physics C: All but one student was taking the AP Macroeconomics exam today. We’ll finish reading Arcadia tomorrow.