Positive sign, symbol, addition, subtraction, multiplication, division, equal sign, greater than sign, less than sign, greater than or equal to sign, less than or equal to sign, absolute value sign, root sign and so on.

The definition of mathematical symbols, concept B is an attribute of concept A, and the concept with this relationship is called the concept with genus-species relationship. Among the two concepts with species relationship, the essential attribute that concept B has but concept A does not is called species difference.

The importance of learning mathematics, which is a subject that studies concepts such as quantity, structure, change and spatial model. By using abstract and logical reasoning, we should concentrate by taking class notes. We should arrange a simple and feasible plan to improve our study methods and participate in school activities appropriately.