1. Hello everyone. Welcome to the column "Good boy of Donglian". I'm Liu Qing, the host. Today's program is about mathematics. Students interested in mathematics should pay attention! (# Play music)

Second, mathematician Hua once described the relationship between mathematics and life as follows: the universe is big, the particles are small, the speed of rockets, the cleverness of chemical engineering, the change of the earth, the mystery of biology and the complexity of daily use.

It is true that mathematics is everywhere, and many problems in life need to be solved with mathematical knowledge.

So we must learn math well.

Recently, mathematics helped me solve a life problem. Dad runs a decoration company, and sometimes he tests me with math problems encountered in decoration. Last Monday, my father came home from work and said to me as soon as he entered the room, "Jingjing, today my father took another job, that is, laying floor tiles for your uncle's living room, but I don't know what square floor tiles should be used." In addition, your uncle asked that there should not be half a floor tile, but all of them must be one piece. I measured that his living room is 5 meters long and 4 meters wide. In addition, the side length of the floor tiles sold by the building materials company near our home is no more than 60 cm. Please help me figure out how many centimeters of floor tiles will be laid in your uncle's house, and how many pieces will be needed for a * * *? " #

As soon as dad finished, I began to think seriously. I already know the length and width of Grandpa Sun's living room and the side length of the floor tiles needed for paving. Where should I start? After thinking for a long time, I finally figured out a way, so I excitedly said to my father, "Dad,

The living room of Uncle Sun's house is 5 meters long.

Meters, 4 meters wide, floor tiles can't have half a piece. As long as you find the greatest common divisor of 5 and 4, you can know the side length of the floor tile. The greatest common divisor of 5 and 4 is 1, that is, the side length of the floor tile is 1 m, that is, 100 cm. Ah, no, no.

The side length of the floor tile can't exceed 60 cm, so reduce 100 cm to 50 cm, that's all. If the side length of the floor tile is 50 cm, the area of each floor tile is 50×50=2500 (square centimeter), that is, 0.25 square meter, because the living room area of Uncle Sun's house is 5×4=20 (square meter).

So a * * * needs such a floor tile 20÷0.25=80 (blocks). "Listen to me, my father praised me for being smart. #

I then said to my father, "We can also think that the area of each floor tile is 0.25 square meters, so the area of four floor tiles is 0.25×4= 1 (square meters), and the living room of Uncle Sun's house is 20 square meters, which requires 4×20=80 floor tiles.

So a * * * needs 60×(80÷5)=960 (yuan). Dad said, "Jingjing is really good. She not only helped dad figure out the length of the floor tiles and the number of blocks needed, but also helped dad figure out how much to use. " I am very happy to hear my father's praise again. Look, math is of great use. Finally, I want to say to you: "Mathematics comes from life, and life needs mathematics." #

Third, after listening to this story, you will definitely feel something. Here are some skills to learn math well.

First of all,

Have confidence

First of all, believe that you can learn math well. After all, mathematics from primary school to high school is relatively basic. Anyone can learn it well with confidence and proper methods. #

Second, be careful.

Learn math by heart, not by rote. Pay attention to the teacher's key points in class. Pay attention to recording the wrong questions such as homework questions and exercises, which can help you quickly check for leaks and fill gaps. #

Third, have perseverance.

Learn step by step, step by step. Don't expect to learn everything overnight, don't expect to eat a fat man in one bite, and understand the truth of "not ashamed to ask questions". Teachers like students who love to ask questions, no matter how difficult the questions are.

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Ok, this broadcast is over. See you next week at the same time. I'm Liu Qing, the host. Thanks to Teacher Li Chifen for her contribution to this broadcast. I wish the students a happy lunch break.