Be sure to make a list of what number you have given to each student's paper. Email the anonymous, numbered papers to the assigned revisers. Revisers will make comments and send the paper back to you. Get out your list and send the revised papers back to the authors. Let students know that this will not be a permanent activity in your classroom because you want students to get to know each other.
Students move one computer to the right or left and respond within the author's document.
Every five minutes or so, students will keep moving in the same direction. Advise students to refrain from reading all of the comments that previous revisers wrote. This will help eliminate repetition and will save time. Students can respond at the top of the document or within the paper. I often spend an entire class period doing this exercise.