A 450-word essay about mathematics

Spring comes and summer passes, autumn harvests and winter hides, but we still have a long future ahead. The world is full of fallen stars, the earth is abundant, and the world is not lonely. Youth is just a passer-by, it is also a teacher and a friend, it depends on whether you cherish it or not. Throughout life, the grass and trees are like spring. When they come, they are like wind and when they go, they are like dust. Next, let’s take a look at the 450-word composition on mathematics brought to you by A Bundle of Green Grass.

Part 1: Mathematics and Life Ma Le

Originally, I thought that the application of mathematics in Shengchuang was only shown on phones, remote controls and mobile phones. But later, after some advice from my math teacher, I discovered that there are many mathematical elements in life. In addition to numbers and orderly arrangements, there are also graphics. Have you discovered it?

Now let me introduce my findings. What I am thinking of is our houses. All houses have structural drawings. As we all know, all graphics are composed of points and lines. The house construction drawings are also accurate to the length. Width. High standard distance. The next step is decoration. When you walk into the building materials market, you see ceramic tiles of various colors and sizes. Have you noticed it? They are both rectangular and square. Walking further inside, we smelled the aroma of logs, and neatly arranged wooden boards, like mighty warriors, stood on both sides, waiting for our review. If you look closely they are also rectangular. Walking further inside, there are many types of floors sold, including solid wood, composite, and bamboo. They are also rectangular in shape. Hey! Why are they all rectangular? Are there no other graphics? Next, I made another major discovery: round tables and chairs; oval mirrors; triangular washbasin stands, pentagonal decorative paintings, etc. Having said so much, I want to tell everyone that mathematical elements are within reach and inseparable in life. Because of this discovery, my interest in learning mathematics was further stimulated.

I love mathematics, and I love life even more. Friends">Children, do you have any new discoveries? Share them together!

Chapter 2: Mathematics Games Guo Shuying

Today at noon, Mathematics Teacher Li is going to play a math game with us. Our eyes all turned to Teacher Li with a "swish", and the teacher began to explain the rules of the game: "I put a magnetic block into one of the three paper cups. You guess which cup the magnetic block is in. I ask you whether to change it, and you just answer, okay!" ”

"Okay! "We said in unison.

The teacher asked me, who was sitting in the first row of the third group, to use the two big notebooks on the podium to block him. Teacher Li quickly moved the three paper cups without letting other students see them. When Teacher Li moved it, I took the notebook away. Teacher Li asked the students: "Guess which paper cup has the magnet in it?" "The students scrambled to be the first, raising their hands high and shouting loudly. Teacher Li randomly asked a student to get up and answer, and the student said: "I choose the paper cup on the left. "Then I'll tell you." Teacher Li picked up a paper cup in the middle and said, "This cup is empty. Do you want to change it?" "As soon as the words fell, the whole class started shouting again. "Change..." "No change..." "Change..." "No change..." "Stop! stop! stop! "Teacher Li said three times. "Change! "The student finally made a decision, and the teacher opened the last cup, and a yellow magnet fell out of the cup. "Yeah! yeah! "The students cheered happily. Monitor Yu Xintong was under the word 'change' on the blackboard.Put a 'tick' on it.

Later, we played it many times and got results.

Do you think it’s strange? Why do we keep playing this game? Then let me tell you: In fact, this game is a unit of mathematical knowledge we are learning - statistics and possibility.

Part 3: Infinite fun in mathematics

Speaking of mathematics, this is an extremely important subject, which contains many useful topics

Use knowledge. For example, there are integers, decimals, fractions, functions, radicals, multiplication, division, addition, subtraction, parallel figures, three-dimensional figures... Don't think that mathematics is useless, in fact, it is very capable! Doing math problems is like a military war, and we who do the math problems are the strategists in the war, looking for ways to break the enemy camp.

One time, I had nothing to do and started to solve a new chapter of the Olympiad problem - the train crossing the bridge problem.

Before I did the problem, I thought about the basic idea of the train crossing the bridge problem in my mind. After thinking about it, I entered the world of mathematics. A few soldiers who were not afraid of death came up, but I easily captured them. Then, I gained overwhelming momentum, killing officers and generals along the way and pushing the enemy back 100 kilometers!

"Oh? How to solve this question? It is simply a three-no product!!" The original question is this: There are two trains, the express train travels 18 meters per second, and the slow train travels 10 meters per second. If two trains go together, the express train leaves the local train after 10 seconds; if the two trains go together, the express train leaves the local train after 7 seconds. Excuse me, how long are the express train and the local train?

This problem lies in the following aspects: 1. There are two situations, one goes hand in hand and the other goes hand in hand. 2. How to judge which one is longer, express train or slower train. 3. Quantitative relationship.

When I got here, I suddenly realized that the express train was actually long. Because it takes 10 seconds for the express train to leave the local train, and it takes 7 seconds for the express train to leave the local train. If the express train is shorter, it will conflict with the second article. So the express train is long. Other problems will be solved easily.

In fact, it is easy to learn mathematics well, as long as you are a dedicated person!

Chapter 4: Mathematics, it’s not easy to say that I love you

"Ah, mathematics, mathematics." The most troublesome thing for me is mathematics. Decimal points, addition, subtraction, multiplication and division, and parentheses, these symbols seem to move, jumping around on the paper and becoming "blockers" in math problems. Mom said, it's not that I don't know how to do it, it's just carelessness.

Some mistakes often appear in math homework. Therefore, every time I do homework, I always attack math first. When I got home from school that day, I first took out my math homework and got it ready. Then I "pulled out my sword," "mounted on my horse," and "fighted the enemy bravely" along the way. "Cleaving a bloody road" in the title forest is extremely brave. Just when I was feeling triumphant, a "monster" appeared in front of me. I suddenly felt dizzy and couldn't find a way out, so I turned around and prepared to "escape". But then I thought, no, I want to go back and fight! No matter how powerful the enemy is, I will defeat the enemy. The "Commander-in-Chief" is waiting for my good news! When I thought of this, I turned back to analyze the "monster" carefully. "Cut a section of steel bar into six sections, which means we have cut it 6-1 = 5 times!" I shouted happily. "Then multiply the time it takes to use the saw again by 6, which is the total time required." After finding the breakthrough, I hit the enemy's vital point. After a lot of hard work, I easily killed the "behemoth".

"I still feel very good about mathematics." After the war, I "held the banner of victory high" and said excitedly to my mother, "It feels so good to overcome difficult problems. My carelessness and fear of difficulties really hurt me. I will work hard to correct them in the future!" I stuck out my tongue to my mother playfully.

Mathematics, you make some people happy and others sad. But if you master the problem-solving ideas, analyze carefully, and observe carefully, all "blockers" are just "paper tigers." Mathematics, it’s really not easy for me to say I love you!

Chapter 5: “Stumbling blocks” in mathematics learning

In the past few days, the teacher has not assigned much homework, but it is always very late after school. After finishing the homework, it is already very late. How can I watch that tempting TV! So I wrote like crazy at noon, and there was not much homework left in the evening! Great!

On this day, I spread out my "Practice for the Test" as before, and a question caught my eye: for a barrel of oil, I used 1｜3 for the first time, which is exactly 4 liters, and I used 1｜4 for the entire barrel of oil for the second time. How many liters are left?

I glanced at it carelessly: "It's too simple, just use equations to connect it!" I wrote quickly, but halfway through writing, I felt something was wrong: there are two unknowns, how to write this? I haven’t learned binary equations yet, how do I solve them?

I erased the equations and thought hard. I would draw pictures and list equations. I thought for half an hour but still couldn’t come up with any clue: How to solve the two unknowns? I focused all my attention on 1｜4 and didn’t think about 1｜3 at all. Little did I know that this 1｜3 was very knowledgeable!

Dad is back. I haven’t solved this problem yet, so I have to ask my dad for help. Dad looked at the question and smiled: "The question is not difficult!" "Isn't it difficult?" I couldn't help but ask, "There are two unknown numbers on it, 1 | 4 and the remaining oil." Dad said: "That's because you focused your attention on other places.

"Look, 1｜3 liters is exactly 4 liters of oil, so how much oil is there in total... 12 liters of oil. With 12 liters of oil, can't we find out how many liters of oil are 1｜4? "Hey, that's right! Why didn't I think of starting with 1｜3?

I returned to the room and solved the problem.

Thinking about it carefully, aren’t these the “stumbling blocks” in mathematics over the years? Some problems may seem difficult on the surface, but if you look at them from another angle, wouldn’t they be easier?

Why didn’t I think of this!

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