ds is now 4 1/2....reading at about a 3rd grade level. but although he can decode and talk about what he has read....he sometimes gets frustrated when he picks up the book that is level appropriate for him bc it is so long. but when he picks up a book that is shorter in length, he is frustrated it is too easy. any ideas on how to help him with that? i wish they made advanced books for early readers that were not so lengthy for kids who haven't built up a 3rd grade level of endurance yet! lol.