he flipped it open and saw that most of it was nothing more than a lesson plan for the following day . he looked confused and glanced down at himself . `` before this goes too far , you need to let me go . `` you were right , you are good at math , seth . '' crossed a strip of grass , then sidewalk , then grass again , and as he reached the opening of the alley , it occurred to him that he did n't even know what he was going to do . 