The words on the wall of the Washington Children's Museum, where knowledge and action are integrated, are more expensive than action, all of which tell a truth: learning is more expensive than knowing and more expensive than action. Liu Xiang, a writer in the Western Han Dynasty, said, "Seeing is not as good as hearing, and seeing is not as good as practice." For thousands of years, many thinkers and educators have been expounding an eternal truth for us: it is better to see than to do. That is, the unity of knowledge and action is more important than practice. In fact, combining what you hear with what you see is knowledge. How can a person who has no ink on his chest make a difference? The ancients often said, "Learn from others' strengths and make appointments, and accumulate wealth and make little hair." If you don't have a good knowledge, you can't compare with anyone. Mr. Tao Xingzhi, a great people educator, pointed out that "doing is the beginning of knowing, and knowing is the success of doing". The name "action" also represents his educational thought of "action-knowledge-action again". We acquire knowledge through observation and hearing. In the teaching process, teachers should pay attention to the realm of "knowing how to draw bamboo". When Qi Baishi learned to draw shrimp, he used to sit in the shrimp pond all day and watch the dynamics of shrimp. Xu Beihong's picture of running horses is the result of his frequent observation of horses in the stables. In order to finish The Last Supper, Leonardo da Vinci spent two and a half years searching for people in pubs and markets and observing their behavior. These famous examples all enlighten us that if we want to learn successfully, we must have "knowledge" in our stomachs, and "knowledge" is the premise and foundation of "doing". In the teaching process, teachers should spread knowledge and students should master knowledge. Knowledge alone is not enough. What matters is "doing", not not not doing it. If you only have knowledge and foresight, but just talk, you will not be famous, but will be regarded as an "empty bottle" by others, without real talent and practical learning. Xunzi said, "I've been thinking all day. It's not as good as what I learned at the moment." Confucius once said, "I don't eat for a day and I don't sleep for a day." It's useless to think, it's better to learn. " Just knowing, but not doing it, I think all he has learned is stillbirth. In order to ensure the accuracy and meticulous of his medical skills, Li Shizhen personally went up the mountain to collect herbs and asked the farmers about the situation. In order to complete his travel notes, Xu Xiake traveled across mountains and rivers and traveled to many cities. Balzac personally went to Africa to hunt lions in order to make the characters in the book have lion-like character and perseverance; Tolstoy personally went to the battlefield to observe in order to depict realistic war scenes. All cases have proved time and time again that practice produces true knowledge, and only "doing" can verify "listening" and "seeing", and only "doing" can grasp the true meaning of "knowing". In teaching activities, students can experience life and nature by participating in extracurricular activities and observing the natural environment. Want and get, there are two words in the middle, that is, do. If you are lazy to practice, you will only make empty comments with book knowledge, leaving only a laughing stock. Yesterday, Zhao Kuo talked on paper and eventually lost; Today, some students talk about ideals, but in the end they have no achievements. Learning knowledge, not just listening, but accepting, should use the eyes, ears, hands, brain and other organs to participate in learning, to achieve the unity of listening, watching and doing, in order to achieve the ideal effect.