Evaluative (or critical) annotations not only summarize the source, but include a critical evaluation as well. There are many resources available to you to help you understand what makes a good critical annotation. Below are a few links to assist you with your analysis:
RMIT University Study and Learning Center ~ Information on what to include as well as a sample annotation with descriptions of each element.
UNC Writing Center ~ Information on writing annotated bibliographies in a variety of citation styles.
Writing Critical Annotations ~ Link to a brief presentation on writing critical annotations.