How can I use tumblr with my students?

Wikis are good for sharing and collaborating on documents. So as a medium they'd be quite good for class notes, curriculum and syllabuses.

While you *could* post these kinds of information on Tumblr that's not really what it's designed for. It's a "tumblelog", which makes it easy to post anything digital in a quick and dirty way. The idea is to remove all the friction from saving/sharing the things that have meaning for you--quotes, links, videos, images, audio. You don't need to worry about being witty, adding commentary or even adding titles. You might think of it as a digital scrapbook of your online travels.

Simplicity is at the heart of a tumblelog and Tumblr is beautifully simple to use.

One of the nice things about Tumblr is that you can link to other web services you may use--Twitter, Flickr, LastFM, your blog, etc--and your activity on those services will appear inline on your Tumblr feed. This allows you to create what some people are calling a "lifestream", an aggregate view of what you're doing all across the Web. You might even be able to flow in your activity on Moodle.

Hope this helps!