Note: there links to many online demonstrations on the curious page.

• Wave-particle duality. The famous electron double-slit experiment by Tonomura is used to  illustrate the schizophrenic nature of elementary particles which tend to exhibit both particle-like and wave-like attributes.
• html demonstration (animations seem to work only with Internet Explorer*)
• PowerPoint file  (no animations) or PowerPoint package (with animations, about 6MB)
  
• Particle in a box. Demonstrates stationary states, some basic properties of the wavefunctions, and the time evolution of various linear superpositions. 
  
• html demonstration (animations seem to work only with Internet Explorer*)
• PowerPoint file (no animations) or PowerPoint package (with animations, about 2MB)
• Wavepackets.  Stationary and moving wavepackets, in free space and in the presence of various obstacles (hard wall, potential step, potential barrier).
• html demonstration (animations seem to work only with Internet Explorer*)
• PowerPoint file (no animations) or PowerPoint package (with animations, about 4MB)

The animation above illustrates the time development of the probability density of a particle
inserted at time t=0 at the center of the box.