Different learning stages have different requirements for students' thinking. The content of primary school learning is generally concrete, which students can see and even touch. Junior high school needs strong logical reasoning ability, and senior high school needs strong analytical ability. Knowledge is getting harder and harder, and the requirements are getting higher and higher. It is difficult for most students to persist in thinking, studying and analyzing, and learning is always superficial because of inertia. As a result, they became more and more interested in mathematics.
Reason 2: Actually, it has something to do with the difficulty of math learning. It was not difficult in elementary school. Almost every student is very happy, and almost everyone's score is above 90. Junior high school and even high school are exactly the same. It is difficult for many students to get 80% marks. Of course, at this time, some students were able to get full marks, but their grades began to be seriously divided. About 50% of the questions are quite difficult, while others are almost full marks. It was even harder in high school. Some papers with a score of 150 are above 140, and some are above 30. Those with low scores almost give up mathematics, while those with high scores are more interested in mathematics. In fact, these changes are normal. Mathematics learning and grades are increasing, especially the separation from junior high school to senior high school, which has a great influence on students' mathematics learning. Knowledge is getting harder and harder, and the types of questions are changing more and more, so that we can learn well.