One of the reasons I really like this site is the fact that a teacher can create classes and assign students activities to do with the plethora of primary sources available on the site. After students make their assignment, the teacher can view it on the primary access site. Everything is in one place. It's so easy to do.
When one creates an account, the directions for adding classes and students are simplified and detailed. Making assignments are also easy to do.
I can see this being used in a large variety of courses. Social Studies, Language Arts, Science and Foreign Language definitely, but even some other courses could find value with this site.
I decided that this is going to be one of the tip sheets I share with colleagues this school year because many of them can use this in their classroom. I think it will be a great PBL tool.