GROUP WORK - I think this will work well as a group activity because each student has a designated task and upon completion it should be easy for one of the students to compile the information and create the power point from attachments to email.
HOLOCAUST SITES -These are just a few of the many Holocaust websites, however, I think they are some of the best ones. You may want to revise your lesson and include some other areas and delete some of these categories.
MAPS AND PHOTOS - This will help the students personalize their experience, and although each group is doing some of the same topics, the have so much to select from that there should not be any two alike.