I knew a majority of the composition terms listed on the sheet we used for the shoot on our field trip to the Cadman Plaza. Leading lines was one of the few new terms to me. I have never used this technique and found it quite fun. I used this technique in the picture of the little girl on the scooter where the chalk line on the ground leads your eye to her.
http://www.flickr.com/photos/92705583@N02/9783429233/in/pool-2301534@N21