I've been waiting ALL YEAR for the tech dept to get me internet access on my new sftp/ftp/SAGE servers....
So, I am using sftp on the new server for my AP Computer Science class to do their classwork. I gave them an Ubuntu Desktop as a client and setup the new server as an Ubuntu Desktop plus openssh so they can write their java programs. I also added vsftp to that server so I can share some files with them. The problem is that all this is only available to them during class! My old servers had external IPs as well so my students could work from home.
I also used to share all my SmartNotebook pdfs and http://screencast-o-matic.com mp4s on the old ftp server for my Math students to access from home. Access to these files from home was a great added resource to my classes. If a student is absent, they can easily see what was missed and catch up. If a particular topic is giving the student difficulty, he or she could load up the files from that class and review what we did even if it was months ago! I am using the new server as an ftp site too, but its only accessible in school via Linux. That's great for my computing students except for no access off campus. However, most of my Math students don't use Linux and liked accessing these files from home.
Enter the 21st Century Mathematics Classroom! I just started uploading my pdfs to http://www.slideshare.net/calcpage2011 just like my old ftp site. Also, all my videos are already on http://www.youtube.com/calcpage2009 for my students to view. I'm also looking at http://www.edmodo.com to link all these resources together! Edmodo is fashoined after Facebook, so the students know how to use it already. I created a teacher account. Then I added a group for each of my classes. Each group gets a unique access code that you can give to your students. When they make a student account, they provide the access code and get a private Facebook-like wall for the course. On that wall I can post assignments for the week and links to the slideshare pdfs and youtube mp4s.
BTW, just for the record, I take full responsibly for coining the following terms.