A review of papers on e-learning in the workplace 2000 - 2012. While this isn't quite an example of an annotated bibliography, it's got some useful material in that it covers a range of different papers, and demonstrates how they have extracted key information that all have in common. Use it as an example of the use of reviewing many papers, and the strategies they used to analyse the papers, which you might want to think about a simplified version of their approach yourself for your group work.
A little dated now, but an example of a bibliography (extensive) with annotations - and a (long!) summary of all of the papers.
Way above what the coursework requires, but should show you how something like this is useful.