The movie files are in Quicktime format and you will need the free Quicktime player to view them. You can find the free Quicktime player here:

The movies may play in your web browser, depending on which browser you are using, your plug-ins, and your security settings. If the movies do not play, you will be asked to download to your computer. Once downloaded you will be able to view with the Quicktime player installed on your computer.

Lessons with videos: