As the saying goes, "sharpening a knife does not mistake a woodcutter." When reading a topic, be serious and calm, read carefully and read slowly. You must read every word clearly, and try your best to remember the characteristics of the topic without reading it. This is the first step to review the meaning of the topic. If you don't understand it the first time, read it again, or even read and chew it repeatedly until you understand the meaning of the question.

2. Grasp the keywords and find the relevant quantities.

On the basis of understanding the meaning of the question, through rereading the stem of the question, we can find out the key words, key quantities, known conditions and problems to be solved in the stem of the question, and find out what kind of equivalent relationship exists between these quantities. At the same time, expand the association and guess what can be further obtained from the known conditions, such as guessing whether there will be an isometric conclusion from the parallel conditions and so on.

3 Critical, mining implicit conditions

When examining a question, some conditions are not directly told to you, but are implied in a condition in the question or in the picture, which requires us to be good at excavating the implied conditions, so that it is easier to find ideas and methods to solve the problem.

4. Turn strangeness into familiarity and abstraction into intuition.

Lenovo's consistent thinking mode of examining questions turns unfamiliar questions into familiar ones. Sometimes, because of the complexity of the questions, for the convenience of thinking, we can draw the examination process on grass paper, and draw a sketch by drawing, underlining, listing or other means, so that thinking has a supporting point, reducing the burden of memory, and it is also very convenient to analyze problems. When examining the questions, we might as well find out the relationship between the quantities in the questions intuitively and vividly.

5. Flexible use of thinking methods, knocking on the door to solve problems

Thinking method is the soul of solving problems. Some problems need to be guessed or verified, some need to be combined with specific data to obtain general laws, some need to be combined with numbers and shapes, and some need equation models. Therefore, when examining questions, we can successfully knock on the door of solving problems by contacting the appropriate thinking methods.