Harvard's natural spelling runs through the logical thinking mode in Europe and America and establishes real English thinking. Mp3 Walkman, English textbooks for school, CD-ROM lively at home. You can study during recess and after school, and you don't have to attend remedial classes on weekends. You can study at home. Parents can see the progress of their studies at a glance. English learning is no longer a patent in the classroom, but a part of children's daily life. According to this study, children who have learned natural spelling are far better at reading and writing when they grow up than children who have not learned natural spelling.