Share your presentations and documents with Slideshare.
As with many ways of sharing media, there is a basic free version and a ‘pro’ option that you subscribe to but has more features. For uploading slideshow presentations it is free. These can be public or private and there is the facility for commenting.
Presentations can be embedded in your blog, so you can use Slideshare to make lessons available to pupils at anytime or as a showcase of pupil work.