You need to first observe people engaged in an activity. Your choice of activity is up to you. A successful activity will be able to answer a very specific and/or important question that you have.
Observe an activity and take notes, the notes should also be submitted.
In your essay, you must include the following:
Explain briefly:
The question you had that motivated your observations,
Why this question is important:
Why do you care about this?
Who else would care about this, and why?
The observations you made and other relevant details (where, when, who was there, &c.),
How your observations did or did not answer your questions, and:
Did the observations end up answering a different question?
What new questions arose after your observation?
*N.B. It's OK if your observations didn't answer your initial question. More important is that you be honest and insightful about what you observed and what it indicated.
Focus on answering these questions in detail:
Your detailed observations and conclusions particularly relevant to your question,
What observations were puzzling at first, that challenged your initial hunch of what you thought you would find?
What further questions have your observations proposed?
What could be the next step in research if you decided to continue investigating your observations?