Matter Waves uses the example of a double slit experiment to explore the wave-like properties of quantum particles.

Interpreting Wave Functions uses a Double Slit Diffraction simulation to demonstrate the need for a description of the measurement probability.

The Light and Waves tutorial uses the double slit electron experiment to demonstrate the wave-like properties of electrons.

Visual Quantum Mechanics contains a series of simulations, tutorials, and pedagogy to help in the learning of concepts in quantum physics.  This material is suitable for a wide range of students.