Mistakes are inevitable and are the premise for everyone to grow up in life. However, mistakes in life will bring us irreplaceable enlightenment. Edison, a famous scientist, is famous for inventing the light bulb. Do you know how many experiments he made to invent the light bulb? None of those thousands of experiments is repeated, which shows his earnest attitude and his strength. If he gave up after several experiments, or if he didn't think of this experiment, would we still study under bright lights? Assuming it is possible, how many years will it be? Will our generation? No wonder he is called the king of invention. Without patience, all his inventions probably wouldn't exist. Perhaps the present civilization will go backwards for decades or even hundreds of years ... Since childhood, he has made many mistakes and learned many lessons. But in these classes, I got the most valuable experience: math is a strong point, but because of carelessness, my math performance is getting worse. An exam after the fifth grade, full of confidence. Unexpectedly, my mother told me that I only got 50 points in the exam. Sure enough, on the day of the teacher's grade, the first one was not me, the second one was the third one ... When my name popped out of the teacher's mouth, fifty people were shocked, and none of them changed color. Of course, that doesn't include me. After the papers were handed out, I carefully searched for the reasons for the mistakes. Wait a minute, the front of the test paper is clean, and one question is correct. Then-after hesitating for a while, I turned the test paper over and saw a super big cross next to a distance calculation question, and there were several wonderful comments: "You missed this question when you did your homework, and now you are wrong, and you will be deducted 50 points." 10 points will be deducted 50 points. From then on, I have a good memory: I have never missed the same type of questions twice. Although this lesson improved my math scores, it didn't eradicate my real shortcomings. After several tests when I graduated from primary school, I got rid of carelessness: "The absolute value of negative seven is negative seven"! I believe that people who have read this question will think that this is not done by a good student. Coincidentally, it is what high flyers, as many teachers think, did. There is a comment next to this question: "You are wrong in the wrong question, and you will be punished." Since then, I have been interacting with several good classmates who made the same mistakes on the ground in front of the podium. There are two or three math classes a day. Sitting in front of the podium is 40 minutes, and my legs are numb many times. I have been sitting for more than ten days ... mistakes can be said to be a stumbling block on the road to success. One or two are inconspicuous. If you leave them alone, they will accumulate more and more. If you don't have the heart to bend down, it will become a mountain you can't climb …