The unity of knowledge and action is more valuable than doing it. This sentence on the wall of the Children's Museum in Washington all tells the truth - learning is more valuable than knowing it, and it is more valuable than doing it. Liu Xiang, a writer in the Western Han Dynasty, once said: "What you hear with your ears is not as good as what you see with your eyes, and what you see with your eyes is not as good as practicing it." For thousands of years, how many thinkers and educators have always explained to us an eternal truth: Hearing a hundred times is not as good as hearing it. Once you see it, it’s better to do it once than to see it a hundred times. That is to say, the unity of knowledge and action is more important than practice. In fact, knowing is the combination of what you hear and what you see. How can a person with no idea make a difference? The ancients often said, "Extensive knowledge and apprehension, thick accumulation and thin development". If you don't have extensive knowledge or knowledge, you will have nowhere to compare with anyone. Mr. Tao Xingzhi, the great people's educator, pointed out that "Action is the beginning of knowledge, and knowledge is the completion of action." The name "Xingzhi" also represents his educational thought of "action - knowledge - action again". We gain knowledge through observation and through hearing. In the teaching process, teachers should pay attention to the state of "having confidence in drawing bamboo". When Qi Baishi was learning to draw shrimps, he squatted by the shrimp pond all day long and watched the movements of shrimps; Xu Beihong's galloping horse picture was the result of him often watching horses in the stable; Leonardo da Vinci spent two and a half years in order to complete "The Last Supper" Use your time to go to pubs and markets to search for characters and observe their expressions. The examples of these famous people all inspire us that if we want to succeed in learning, we must have "knowledge" in our belly. "Knowledge" is the premise and foundation of "action". In the teaching process, the purpose of teachers disseminating knowledge and students mastering knowledge must be achieved. "Knowing" alone is not enough. What matters is "walking" and doing. If you only have knowledge and foresight, but only empty talk, not only will you not gain a good reputation, but you will be considered by others as an "empty water bottle" without real talent and learning. Xunzi said: "I think about it all day long, and it is not as good as what I learned in a moment." Confucius also once said: "I have tried not eating or sleeping all day long, thinking about it, it is useless, it is not as good as learning." If you just know it but don't do it, what you have learned and what you have learned will be aborted. In order to ensure the accuracy and detail of his medical skills, Li Shizhen personally went to the mountains to collect herbal medicines and asked the farmers about the situation; Xu Xiake traveled across mountains and rivers to complete his travel notes, visited famous rivers and mountains, and visited many cities; Balzac wanted to make the characters in the book have a lion-like character With perseverance, he once went to Africa to hunt lions in person; in order to depict realistic war scenes, Tolstoy personally went to the battlefield to observe. All examples have repeatedly proved that practice brings true knowledge. Only by "doing" can we verify what we "hear" and "see". Only by "doing" can we grasp the true meaning of "knowledge". In teaching activities, students can experience life and nature by participating in extracurricular activities and observing the natural environment. Think and get, there are two words in between: do it. If you are too lazy to practice and only use book knowledge to make empty remarks, you will only make people laugh. In the past, Zhao Kuo talked about military affairs on paper, but ultimately failed; today, there are students who talk about ideals, but in the end achieve nothing. To learn knowledge, you can't just listen and accept it. You should also use your eyes, ears, hands, brain and other organs to participate in learning, so as to achieve the unity of hearing, seeing and doing, so as to achieve the ideal effect.