At least I thought so.
Then I got home and started the homework. Different story. It just wasn't that clear anymore and I realized that I didn't quite get it the way I thought. This was not exclusive to homework as it also happened at times on quizzes and tests. I thought I had studied enough (which, admittedly was what I always thought) but it did not pan out.
I want my students to avoid this problem and the trick is for them to answer the question: "How do I know when I really know it?" But how?
I recently saw a tweet for a webinar run by Ray Jimenez, who is a great webinar presenter by the way, entitled "Learners Don't Know What They Don't Know." Of course, I was excited to get the long-awaited answer to my question in one interesting hour but, ironically enough, I assumed incorrectly because the topic centered on something a little different.
The traditional exit slip asks the generic question, "How well do you understand today's lesson?" The problem is the same, though. Do they really know? The key to the exit slip (or daily quiz in my class) needs to focus on exposing how well they know the material. It should be a question that shows their understanding, not their opinion of that understanding.
That question will be a lot less generic than the "How well..?" and therefore more difficult to create, but in the long run it will be one that is far more effective.