Annenberg Learner utilizes media and other interactive tools to aid K-12 teachers in educating on academic subjects. The volcano section is filled with excelling resources and lesson plans focused on and around volcanoes.
Volcano hazards and current activity alerts with webcams, monitoring, podcasts, and images.
Another Bill Nye video, full of information and entertainment
This video link from BBC offers an extremely informative tour of volcanoes from around the world.
After learning about volcanos, I would have the students choose a volcano from anywhere around the world and write an essay on what they know about that volcano from the notes that they took in class. As well, UAF has a great geophysical institute where I could take students on a field trip to, to learn from professional volcanologists.