I just spent a few minutes at Sprout Builder which seems to be another way to build widget.
Sprouts are interactive and portable chunks of web content. Some people call them widgets, mashups or mini-sites but we just call them sprouts.
I have not really tested may of these types of service, but it only took me a couple of minutes to build a ScotEduBlogs feed widget.
It looks like you can do a lot more with sprout builder than just pull a feed. some of the examples include audio and slideshows. The sign up made me admit I was over 13 so not something for the classroom, but it might allow you to make something for you classes.
There seems to be a ton of embedding options, click on the share button to see them. You can add to facebook, myspace, iGoogle etc. or get an embed code for a post or webpage.
Feel free to embed ScotEduBlogs on your site, or better make a slicker one for the ScotEdublogs community.