Math, I love you! The 700-word math on the first day of narration is the ever-changing pocket of Doraemon, Aladdin's magic lamp and Pandora's box ... Mathematics is wonderful and brings us happiness and discovery. In this math class, Teacher Ma asked us to estimate and measure the length of the North-South Avenue in our school. Suddenly, I was cheated. I have no idea about "rice"! "300 meters!" "200 meters!" "No, it's150m!" The students are arguing. I hesitated to raise 1000 kg's right hand: "It should be, 200 meters." Teacher Ma smiled and asked me to sit down. "How long is it? You will know when you measure it!" It's easy for Mr. Ma to say so. He didn't give us any tools, only let us measure with our feet. Oh, by the way, he also told us that the corridor is 2 1.5 meters long. How to measure without a ruler and rope? "You can walk in the corridor and calculate the average step size, so you can calculate the length of the avenue!" Teacher Ma smiled and showed us the way when she saw that we were all very sad. "1,2, 3 ..." "35 steps!" 2 1.5 divided by 35 is about 0.63 meters. "Yes!" A burst of joy rushed to the north-south avenue of the school. I just feel that I am running too slowly, and I can't wait to jump directly from the third floor. I really think math is fun at this time! It is attracting me! "1,2, 3 ... step 239! "I'm not in a hurry to calculate, but looked at the north-south avenue. My eyes tell me it's at least 200 meters. I'm not sure, "239 times 0.63 is about 15 1 meter." I figured it out! It has been solved! My eyes lied to me! I jumped up with excitement, just like a farmer saw a big basket of fruit; Like a nouveau riche who made a fortune-happy! "Now, tell everyone the real length is-"The students opened their eyes like glass balls, pricked up their ears and listened attentively: "Yes159.8m, which is about160m!" Teacher Ma went on to say: "If the error is within 10 meter, it is still relatively accurate!" "Yes!" A cheer echoed in the whole school for a long time, and everyone tasted the sweetness of mathematics achievements! Perhaps, our eyes will deceive us, but mathematics will never. It is our loyal friend and partner, and it can turn my ordinary feet into exquisite measuring tools. Ah, math, I love you!