Do some searching for more reference materials related to assessment and evaluation of projects that contain multimedia. Bookmark them on your Delicious site and at least add the tag eddl513reswk8. Don’t forget to look for presentations on sites like SlideShare, social networks like Ning, and get help from your network.
Also check out the Integrating multimedia work into assessment site that is developing on Cloudworks. It is mostly aimed at higher education, but join if you like.