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.
Activity
Other

Seton Hall Univ: Series and Convergence

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

Rice University: Cynthia Lanius: Visualizing an Infinite Series

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