The domain knowledge graph is the key to help realize personalized education as the basic program for realizing intelligent diagnosis. As the foundation of science and engineering studies such as mathematics, physics and chemistry, operation is also one of the important qualities of the 21st century's core literacy of mathematics. It is particularly important to construct domain graph of operation and use it to carry out diagnostic teaching. To this end, in view of the characteristics of elementary school mathematics operations, the domain grap...
