What is the most cost effective way to provide individualized, immediate feedback? Is it reasonable to do this without paying for subscription services?
I created a classroom of 21 students, got them really fired up about using Diigo to track their research and annotate their sources...and then half the class disappeared. These students can't log in and they no longer appear in my teacher console. They used the program successfully for about three weeks, then ZAP! They disappear! Can we retrieve these accounts and the research connected with them?