. Master the correct method. After analyzing the causes of errors, write the correct problem-solving method next to the wrong problem. Not only the answer, but also the idea of problem solving. That is, key points, formulas and specific steps.
. Master the correct method. After analyzing the causes of errors, write the correct problem-solving method next to the wrong problem. Not only the answer, but also the idea of problem solving. That is, key points, formulas and specific steps.