For children, both going on field trips and studying in the classroom are considerable options. However, it seems that studying outside the class children might gain more, that except learning abundant knowledge, they also harvest unforgettable experiences.
Study according to the field trips could help children memorize the knowledge better. Long time attention concentrated to remember the words teachers mention during the class might be tough for many students, especially for those at a low-age. For example, if  a teacher wants to introduce the ancient history of China for students, taking them to the museum will be more helpful. As in the museum, they can gain a deeper impression according to a careful observation of those ancient exhibitions. It has large probability to give them a much more lasting memory.
Besides, students also gain an unforgettable experience. Studying in the class in a traditional teaching method since hundreds of years ago. As a result, studying outside the school will give children a unique experience. During the study in field, children will get a rid of tiredness and feel more freely as they might be allowed to communicate with his or her friends. This kind of study pattern, to some extent, could promote the relationship between students.
However, going on field trips to study may have some potential problem, such as safety risks. Teachers have to pay more attention to their students, which might be quite difficult as the number of students is much larger than teachers. Their parents may also consider the safety of their children and object to this study pattern.
To sum up, breaking the traditional minds, taking students to study outside the school is a brilliant idea and beneficial a lot to children. At the same time, parents  and schools should take actions to avoid those potential problems.