Animoto is a service that combines your images and music and automatically creates a music video for you. When you are ready to work with your students with Animoto, make sure that use Animoto for Education site to sign up your school.

Here is Claire's presentation about calisthenics

And here is one I created using voiceovers and music.

Animoto for Educators has a whole lot of other examples of Animoto in use by teachers and students.