So we can do sound. Now, let's do both sound and vision! If you recall Chapter 3, one of the ways in which we used a database or a glossary was by enabling students to upload resources for others to see and use. If we asked them to upload their favorite photos of our class trip to a river into a Moodle database, we could make use of the pictures in the movie that we're about to create. With our new-found expertise in Audacity, we shall get one of the gang of students to record the narrative, and we shall add that to our movie. Students and parents (who have given permission for their offspring to be featured in the movie) will love to see the action, and it will give the next year's hopefuls an insight into what the trip might entail.
Although we are actually making a movie (in this instance, an animated slideshow) of an event, don't think that's all you could do. With selective usage of images and text, you could create a short film to introduce a new topic...