Lulu tells Alvin about the little boy who chopped down his family tree.; Gloria sends Tubby out to walk her dog to keep her away from her and Wilbur.; The kids are mad at Lulu because she took embarrassing pictures of them falling down.; Tubby sends Lulu to the library to return a book for him that Lulu doesn’t know is overdue.; Lulu goes to a lot of trouble to fill Alvin’s wading pool.; Lulu knits Tubby a sweater for his birthday using a barrel as a model.