I now have some more details about the shape of the FREDA module for next year. There will be 40 students, in 4 groups of 10 each. This makes life somewhat easy, as I can divide them up into 10 groups with 4 students each, which seems to be a good number to be able to have good discussions/collaboration, while still finding a regular date/time to meet during the week. And with ten groups there'll be 10 copies of each formative task, which should also not be too hard to deal with.
However, one component of the plan worries me: originally I had planned to set up one blog per group, but ten blogs seems rather excessive. What is the answer? One blog for all the students? Several blogs for more than one group? Somehow I will have to strike the right balance between it being too fragmented and too crowded. I shall have to think about that in more detail. It also, of course, depends on the great unknown: how the students will take up Web 2.0!