Catch my Mistake (a)
(This is a great activity that students seem to love. I like it because it can be a life-saver during that time when you have finished early and there is not enough time to get started on anything else. Give this a try!)
Have the students take out their books and open them to a page that has a reading passage. This can be a passage the students have already gone over or one that they have not worked with yet. Tell the students that you are going to pretend to be a beginning student. So, they are to listen to you as you read the passage out loud, to follow along in their books, and to circle where you have made a mistake in their books. Of course, as you read the passage, you should make mistakes. (just make sure to keep track of which mistakes you make!) For example, you can leave words out, drop an ending, change the tense, etc. If possible, they should make some kind of mark to remind themselves what kind of mistake you made. This is, however, not necessary.
When you have finished reading the passage once or twice, ask the students to count up how many mistakes they heard you make. Did they guess the correct number? Afterwards, you can go over where you made the mistake.