For those interested in getting a better understanding of how learning occurs, see the following websites:

Explorations into Learning and Instruction: The Theory into Practice Database. Maintained by Greg Kearsley, it's quite useful for brief introductions into learning theories, domains, and concepts.

EmTech has "over 15,000 resources organized by topics for teachers, students, and parents" with this page of links to learning theories.

See also Kathy Sierra's Crash Course in Learning Theory.