A typical annotation contains the following information in approximately 150 words:
Author information: Who is the author? What is her/his educational/professional background? Are they qualified to write about this topic?
Purpose: What is the purpose of this research? Is the purpose stated or implied?
Audience information: To what audience is the author writing (scholars, teachers, the general public, etc.)? Is this reflected in the author's style of writing or presentation?
Author bias: Does the author show any biases or make assumptions upon which the rationale of the article rests? If so, what are they?
Methodological information: How did the researcher obtain the data?
Conclusion: What conclusions does the author draw? Are these conclusions specifically stated or implied?
Conclusion justification: Are the conclusions justified from the research or experience? Are the conclusions in sync with the original purpose of the research and supported by the data? Are the conclusions skewed by bias?
Relationship to other works: How does this work compare with others cited? Does it conflict with conventional wisdom, established scholarship, government policy, etc.? This may be difficult to do if you are only examining a small body of research.
Time frame: Is the work current? Is this important? How does the time in which it was written reflect on the information contained in this work