The foundation is not firm, that is to say, if the foundation is not firm, the tall building will collapse like an earthquake. We should lay the foundation by paying attention to the grass roots, because the grass roots are the cells of society and the foundation of building a harmonious society. Only when many cells are healthy and full of vitality can the social body be healthy and full of vitality.

The phrase "the ground shakes when the ground is not firm" is a common saying, which means that if the ground is not firm, the tall building will collapse like the ground shakes. Metaphor without knowledge base, it is difficult to succeed in doing anything.

Basic famous saying

Laying a good foundation and practicing basic skills, I think this is the secret of learning mathematics well. Su teaches children to see the noble, kind and honest spirit through the beauty of the surrounding world and interpersonal relationship, and on this basis, establishes the quality of beauty in themselves, Suhomlinski.

Computers will play an increasingly important role in mathematical research. Solving mathematical problems with the help of computers will inspire people to seek better and simpler methods, deepen people's understanding of the essential characteristics of mathematics and promote the development of computer-based artificial intelligence. Zhou Haizhong.