Basic Structure: A statement that has two possible responses—agree or disagree—is read out loud. Depending on whether they agree or disagree with this statement, students move to one side of the room or the other. From that spot, students take turns defending their positions.
Variations: Often a Philosophical Chairs debate will be based around a text or group of texts students have read ahead of time; students are required to cite textual evidence to support their claims and usually hold the texts in their hands during the discussion. Some teachers set up one hot seat to represent each side, and students must take turns in the seat. In less formal variations (which require less prep), a teacher may simply read provocative statements students are likely to disagree on, and a debate can occur spontaneously without a text to refer to (this variation This or That can be found in this classroom icebreakers post). Teachers may also opt to offer a continuum of choices, ranging from “Strongly Agree” on one side of the room, all the way to “Strongly Disagree” on the other, and have students place themselves along that continuum based on the strength of their convictions.
This strategy was found here.