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Activity
Interactive Mathematics

Interactive Mathematics: Fast Fourier Transform

For Students 9th - 10th
The Fast Fourier Transform is applied using examples of digital audio recording. Connections to frequency are made through prisms and the cochlea of the ear.
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Activity
Other

Seton Hall Univ: Series and Convergence

For Students 9th - 10th
This is a short lesson explaining the partial sums
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Graphic
Rice University

Rice University: Cynthia Lanius: Visualizing an Infinite Series

For Students 9th - 10th
This site explains the infinite series through visualization.