Screencast 3.1
www.youtube.com/watch?v=ln8GK0hamDg
This screencast walks you through the relationship between wavelength and frequency.

Screencast 3.2
www.youtube.com/watch?v=PXymmm2vaug
This screencast walks you through solutions to the Schrödinger equation and the values of the quantum numbers.

Screencast 3.3
www.youtube.com/watch?v=GJY8jDq-xn4
This screencast walks you through how to determine the electronic configuration of an atom.