Just-in-Time Teaching (JiTT) is an innovative method that enables faculty to increase interactivity in the classroom and engage students in learning. By creating a feedback loop between students' work at home and the classroom setting, time on task is improved in both quality and quantity. This paper includes an introduction to JiTT and evidence of its effectiveness. It concludes with a discussion of our efforts to disseminate JiTT since it was developed in the 1990's.
The continuous wavelet transform can be used to produce spectrograms which show the frequency content of sounds (or other signals) as a function of time in a manner analogous to sheet music. While this technique is commonly used in the engineering community for signal analysis, the physics community has, in our opinion, remained relatively unaware of this development. Indeed, some find the very notion of frequency as a function of time troublesome. Here spectrograms will be displayed for familiar sounds whose pitches change with time, demonstrating the usefulness of the continuous wavelet transform.
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