Yes/No Answers: What´s This? (Game)

These slides are designed for a speaking class to review Yes/No questions basically. The game rules are: 1. Look at part of a picture and try to guess what  is in it; 2. You can only make up "Yes" or "No" questions in order to get tips from the teacher; 3. Only "yes" or "no" answers will be provided; 4. You cannot use any other kind of question.