Primary function in the second semester of junior high school, quadratic function in junior high school, and high school math function, physical force and motion, mass calculation of chemical reactants, etc.
The two major difficulties in junior high school mathematics, geometry has not been extended in high school mathematics, and functions are the focus of junior high school and high school convergence, especially the various analysis ideas of quadratic functions, such as the flipping and translation of functions, the judgment of function graphs, the intersection of functions and coordinate axes and the calculation of interval values, especially the trigonometric functions in high school, which do not have obvious thinking commonalities with junior high school trigonometric functions, but have stronger reference with quadratic functions.
The force and motion of objects in high school is an extension of the knowledge of junior high school physics, but the dilution of this part of the knowledge of junior high school mechanics has a stronger correlation with the functional thinking of junior high school. The same is true for the calculation of the amount of reaction of a chemical substance.
Middle school geometry proof, thinking commonality with high school chemistry reasoning questions.
The difficulty of geometry in junior high school is not in the theorems themselves, but in the independent thinking ability required in the reasoning process. The experimental reasoning of chemistry has a greater commonality with it, that is, it not only uses forward reasoning, but also requires strong reverse thinking ability.
Probability analysis, the heredity of difficult points in biology, and the application of scenarios in scientific thinking.
Physics and chemistry rarely involve probability events, but biological probability is the focus, there are thousands of possible genes, and analyzing the probability of inheritance requires strong scientific thinking, and the starting point of this thinking is probability and statistics in junior high school.
High school Chinese subject looks at junior high school language, high school science subject looks at junior high school mathematics, junior high school language and mathematics other than three subjects, after several years of study in primary school, entering junior high school has formed a relatively complete thinking structure, rather than other disciplines including physical chemistry, junior high school has just contacted, in the basic knowledge of popularization, but not into the subject thinking itself.
The political history liberal arts subject in senior high school is more affected by the level of junior high school Chinese, including the reading ability, analytical thinking ability of liberal arts, and the plate thinking of mathematics, physics and chemistry in each science subject is also closely related to the thinking ability of junior high school mathematics learning.