EXAMPLE 1 - SCHROEDINGER EQUATION - INTERACTIVE MATLAB and PHP
This interactive MATLAB version (prepared by Dany Regelman) for the time independent case has been used with great success by undergraduates.
But I wanted more - even easier and more types of particles.
We also teach bosons and fermions and nothing explains this better than filling boxes with them.
The php websites does this and works on smartphones too. This site was written by Yaron Artzi, and presented at CCP in Moscow.