Animoto allows you to create high quality video slideshows with a few clicks of a button. Simply upload your photos and videos, add some text, select a music track, and Animoto does the rest. Don’t like what you see? Press the “Remix” button and a brand new slideshow for you.
Animoto offers an upgraded account for anyone with a .edu e-mail address, so be sure to visit their Education site. When you sign up for an educational account, you will get a special access code that you can share with your students. That way, they can create full-length videos for free as well.
Check it out here: http://animoto.com/education