http://www.youtube.com/watch?v=PvPh6-9BgQU&src_vid=tzC4GYVbwjk&feature=iv&annotation_id=annotation_32401505
Watch the above video and fill in the worksheet. You may have to watch the video MULTIPLE times in order to fill your worksheet out completely.
After filling in the worksheet, try to do this practice.
http://www.youtube.com/watch?v=e_hHJ1sAkow&src_vid=PvPh6-9BgQU&feature=iv&annotation_id=annotation_162252691