These are a group of outstanding resources for materials science and solid state chemistry. They are all tutorials with Flash animation. I find these to be an excellent review for myself and an excellent primer for my students. Because there are so many useful tutorials on the site, I've highlighted the ones that I think are most appropriate for use in an undergraduate curriculum. These range from introductory to advanced material.

Crystallography & Diffraction

• Lattice Planes and Miller Indices
  http://www.doitpoms.ac.uk/tlplib/miller_indices/index.php
• Reciprocal Space
  http://www.doitpoms.ac.uk/tlplib/reciprocal_lattice/index.php
• Optical Diffraction and Imaging
  http://www.doitpoms.ac.uk/tlplib/diffraction/index.php
• Indexing Electron Diffraction Patterns
  http://www.doitpoms.ac.uk/tlplib/diffraction-patterns/index.php
• Crystallography
  http://www.doitpoms.ac.uk/tlplib/crystallography3/index.php
• Brillouin Zones
  http://www.doitpoms.ac.uk/tlplib/brillouin_zones/index.php
• Crystallographic Texture (aka preferred orientation)
  http://www.doitpoms.ac.uk/tlplib/crystallographic_texture/index.php
•  

Analytical Techniques

• Atomic Force Microscopy (AFM)
  http://www.doitpoms.ac.uk/tlplib/afm/index.php
• Optical Microscopy and Specimen Preparation
  http://www.doitpoms.ac.uk/tlplib/optical-microscopy/index.php
• Raman Spectroscopy
  http://www.doitpoms.ac.uk/tlplib/raman/index.php
• Transmission Electron Microscopy (TEM)
  http://www.doitpoms.ac.uk/tlplib/tem/index.php

Materials Properties

• Introduction to Semiconductors
  http://www.doitpoms.ac.uk/tlplib/semiconductors/index.php
• Introduction to Thermal and Electrical Conductivity
  http://www.doitpoms.ac.uk/tlplib/thermal_electrical/index.php
• Atomic Scale Structure of Materials
  http://www.doitpoms.ac.uk/tlplib/afm/index.php
• Batteries: basic principles, design, and applications
  http://www.doitpoms.ac.uk/tlplib/batteries/index.php
• Dielectric Materials
  http://www.doitpoms.ac.uk/tlplib/dielectrics/index.php
• Ferroelectric Materials
  http://www.doitpoms.ac.uk/tlplib/ferroelectrics/index.php
• Ferromagnetic Materials
  http://www.doitpoms.ac.uk/tlplib/ferromagnetic/index.php
• Fuel Cells
  http://www.doitpoms.ac.uk/tlplib/fuel-cells/index.php
• Piezoelectric Materials
  http://www.doitpoms.ac.uk/tlplib/piezoelectrics/index.php
• Pyroelectric Materials
  http://www.doitpoms.ac.uk/tlplib/pyroelectricity/index.php
   

Solid State Meets Physical Chemistry

• Diffusion
  http://www.doitpoms.ac.uk/tlplib/diffusion/index.php
• Phase Diagrams and Solidification
  http://www.doitpoms.ac.uk/tlplib/phase-diagrams/index.php
• Solid Solutions
  http://www.doitpoms.ac.uk/tlplib/solid-solutions/index.php

The individual resources are referenced that I think are useful are referenced above. There is a reference to the TLP (Teaching and Learning Program) website below. I've also included the link to teaching in Materials Science & Metallurgy at Cambridge. If you dig down to some of the web resources below, you can access some of their teaching resources.

The cc license was chosen in accord with what is on the Cambridge website.