1, the basic knowledge is not solid enough.
It is mainly manifested in the continuous abdication subtraction of the low segment, the multiplication of the end of the middle segment factor with zero, the conversion between the middle and high segment units, the relationship between related concepts and so on.
Another example is the judgment of right and wrong in high-level history, and the error rate of poor students in history is high: hope lies in a clear understanding of theorems and definitions.
2. Students have poor study habits.
Students are not careful enough to examine the questions, copy the wrong numbers, misread the requirements of the questions, and do not calculate carefully, which are all important reasons for losing points.
3. Poor observation ability and poor adaptability.
Students' ability to solve graphic problems, table problems and comprehensive application problems (most of these problems put problem-solving conditions in pictures and tables and require students to solve them through observation) is weak, because students' observation ability is not strong, which leads to the inability to find problem-solving conditions. Some questions are flexible, and some students can't start without touching similar questions in normal teaching.
4. Poor computing ability.
Judging from the results of this test, all grades have lost points because of failing to pass the calculation, and it is more serious.
5. Poor imagination.
In space geometry, students' spatial imagination ability is poor, and they can't use both plane graphics and three-dimensional graphics flexibly.