You know the Blairwitch Project? The following webseries is based on the same idea... Tapes are given to the audience, and we try to understand what happened while we watch the vids.

Possible Xblogtation: Use the videos to make pupils write an essay telling what must have happened?

All the vids are to be seen on youtube. Use the enigmatic atmosphere to make pupils comment on the vids.

Here is the wikisite about the project:

 http://marblehornets.wikidot.com/

Here are the first videos: