The concept is pleasingly simple and flexible. First, you choose just about any verb tense, vocabulary theme, or cultural topic that you want to work on. Cut about 7 sheets of large paper and label each one with a verb, word, question or term.
For example, this week I did a "walkabout" during my unit on describing yourself and others. Here is the step-by-step:
1. Get 7 large sheets of paper and tape them to the walls, magnet them to the chalkboards, or make "stations" and lay them on groups of desks.
2. On each paper, write a subject. I like to use a mix of subject pronouns like "yo" and "nosotros" with actual names of students or teachers in the class/building. You could also do celebrities or musicians. My ladies love Prince Royce, so we used him as one of the subjects.
3. Split students into 7 groups. I like to use participation cards for random grouping or grouping cards.
4. I create a Power Point to display that lists the theme for each "round". Each group writes a sentence on the paper that describes the subject based on the theme of that round, then they move clockwise to the next paper for the next round. Each group will move and write on a different paper for each of the rounds. My rounds for this "walkabout" included physical appearance, eye color, hair color, personality, and nationality. The second to last round is an error correction round where rather than write a new sentence, they correct the ones written by the other groups. In the final round, they chose the best sentence and a group spokesperson to explain why it was the best sentence (grammatical correctness, best spelling, most accurate in meaning, etc.).
My students always love doing this as opposed to a worksheet or individual writing activity. They get to work cooperatively and are very interested in what everyone writes about the topic.