Certainly was shown them: both pretendy ones and real ones during the course, and had to do a real one on my first ever PPL trip with a passenger (what this tells you about my judgment in getting airborne that day you can deduce for yourselves) . On my revalidation check ride the other week my cheerful instructor said that he'd put his hands over my eyes if I went a whisker above 600 feet whilst we did a pretendy clag circuit. I did, he did, and the point was well made, although of course it's easier in real life if there's actual cloud in your hair.
PS: fudgy, bear in mind that if forced into doing a real one, you may not be doing the climb stage, but may be joining the circuit at low level and flying a tight downwind, with perhaps a constant aspect continuous turn to final.