Mathematics essay on doing housework, essay on doing housework

Math Essay – Grocery shopping.

Today, the "little ghost" is in charge. I took the money my dad gave me to buy groceries.

I came to the vegetable market, I want to buy vegetables, the vegetables in the vegetable market are one catty, I am ready to buy 2 catties, but I looked at the vegetables outside the vegetable market, it is only one catty, and it is better than the vegetables inside, I am ready to buy another catty, fried and eaten at night, so that not only the vegetables are bought more, but also cheaper, cheap yuan) yuan) yuan).

Then I went to buy meat. The meat in the vegetable field is lean and lean, and it costs a pound; And the meat outside the vegetable market, the lean meat is less than a catty, in contrast, of course, I choose the meat in the vegetable field. So, I bought 3 catties of meat and spent a total of yuan).

Then, I went and bought chicken thighs again. I saw that the chicken thighs in the vegetable field have less meat and more bones, and the harm of flies, it costs 6 yuan a catty, and I looked at the chicken thighs outside the vegetable field, only to see that it has more meat and less bones, fragrant, and has not been polluted, but the price is a little more expensive, 8 yuan a catty. However, for the sake of good health, a little more expensive is a little more expensive!

Besides, it was only 8-6=2 (yuan) more expensive, so I bought a catty.

With the smell of crucian carp, I came to a crucian carp stall, where the crucian carp is fresh enough, tender enough, and alive enough, and it is a high-quality crucian carp, and the crucian carp on other stalls are not so good. However, the crucian carp here is too expensive, costing 10 yuan a catty. So, I bargained with the stall owner's aunt, and I said:

Auntie, your crucian carp here is very good, but it is too expensive, you see that the first time I came out to buy vegetables, it should be cheaper! The aunt said, "Children, you also know that this fish is good, and this fish sells for 10 yuan, which is already very cheap."

I talked with my aunt for a long time, and it took a lot of effort before my aunt agreed, but it was only one yuan cheaper, and I looked at the money in my pocket, and there was only one yuan left. So, I had to buy half a catty and spend (10-1) 2=yuan.

On the way home, I counted the dishes, calculated the total yuan), plus the fractional yuan left in my pocket). It happened to match the 30 yuan my father gave me.

I was very impressed with this grocery shopping.

What is Math Composition? I only know Chinese composition....

What does math essay mean? Is there an application problem?

Today I am the little housekeeper.

1. Briefly describe what housework you do and why (parents tell you to take the initiative).

2. Write about the process of doing housework, and it is best to write about the difficulties encountered in a few places, so that people can experience the difficulty of doing housework.

3. Show the fruits of labor to parents and families.

4. Summarize experience.

I have encountered many problems in life, and in fact, a large part of them are related to mathematics.

This has created many good opportunities for us to explore independently, so that our wisdom can be brought into play.

Tiles are usually seen in many places such as homes, shops, central squares, hotels, restaurants, and so on. They usually come in different shapes and colors. Actually, there is a math problem here, "math in tiles".

On a tiled floor or wall, adjacent floor tiles or tiles fit together so that there is no gap in the entire floor or wall. Why do these shapes of floor tiles or tiles cover the floor without leaving a single gap? Would it be nice to change some other shapes?

In order to solve these problems, we have to take a look at the truth and study the relevant concepts and properties of polygons.

For example, triangles. A triangle is a flat shape composed of three line segments that are not on the same line in sequence. Through experiments and research, we know that the sum of the inner angles of a triangle is 180 degrees, and the sum of the outer angles is 360 degrees.

With 6 regular triangles, you can cover the ground.

Looking at the regular quadrilateral, it can be divided into 2 triangles, the sum of the inner angles is 360 degrees, the degree of one inner angle is 90 degrees, and the sum of the outer angles is 360 degrees. With 4 regular quads, you can cover the ground.

What about regular pentagons? It can be divided into 3 triangles, the sum of the inner angles is 540 degrees, the degree of one inner angle is 108 degrees, and the sum of the outer angles is 360 degrees. It can't be covered with ground.

Hexagonal, it can be divided into 4 triangles, the sum of the inner angles is 720 degrees, the degree of one inner angle is 120 degrees, and the sum of the outer angles is 360 degrees. With 3 regular quadrangles, you can cover the ground.

Heptagon, it can be divided into 5 triangles, the sum of the inner angles is 900 degrees, the degree of one inner angle is 900 7 degrees, and the sum of the outer angles is 360 degrees. It can't be covered with ground.

From this, we derive. N-sided shapes can be divided into (n-2) triangles, the sum of the inner angles is (n-2)*180 degrees, the degree of an inner angle is (n-2)*180 2 degrees, and the sum of the outer angles is 360 degrees. If (n-2)*180 2 is divisible by 360, then it can be used to cover the ground, if not, it cannot be used to cover the ground.

For example: regular triangles and squares, regular triangles and hexagonals, squares and regular octagons, regular pentagons and regular octagons, regular triangles and squares and regular hexagons, ......

In real life, we have seen a variety of patterns made with regular polygons, and in fact, there are many patterns that are often made up of irregular basic shapes.

Tile, such an ordinary thing has such an interesting mathematical mystery, not to mention other things in life?

Washing the dishes On Sunday, after breakfast, Ben was about to turn on the TV to watch cartoons, and my father gave me an "honorable" task - washing dishes.

Isn't it just washing dishes, a trivial matter! I came to the kitchen, took a basin of cold water, imitated my mother's appearance, washed the big bowl and washed the small bowl, washed the small bowl and washed the chopsticks, and after a period of scramble, it was finally done. I was about to give an errand to my father, but when I touched the dishes and chopsticks, they were greasy, sticky, and not cleaned!

Dad looked at me and smiled meaningfully. Hmph, Miss Ben, who has the best academic performance in the class, can she be stumped by washing dishes! I changed a basin of cold water, brought a steel wool ball for washing dishes, and washed it again, but it was still my nephew who played the lantern - according to my uncle (old).

Now, I'm in a hurry. Dad said first, you can't watch TV until the dishes are washed, and if you continue like this, you won't even be able to watch the tail of the cartoon! I looked at my mother with a plea for help, and my mother came over and said

I'll teach you two secret tricks, one is to use hot water for washing dishes; The second is dish soap for dishwashing! "yes, why didn't I think of using dish soap, look at me stupid! I tried my mother's method, and sure enough, the oil obediently ran away from the dishes and chopsticks.

The dishes were washed, but the question mark came to my mind: "How can dish soap have such a magical power?" "My dad on the side solved the mystery for me:

The surface tension of the dish soap is low, the wettability is good, and it is easy to infiltrate into the crevices of the oil stain itself, so that the oil stain is softened and loosened, and the oil stain is crushed into small particles under external force cleaning. Due to the strong adsorption of dish soap, the crushed oil molecules are intercepted in the dish soap. If you use hot water, it accelerates the movement of molecules, and it is easier to wash away the oil.

You will understand the molecule when you are in junior high school! "My father was afraid that I wouldn't understand, so he drew a diagram for me.

Ah, it turns out that the seemingly simple dishwashing still contains such a deep knowledge!

The teacher told us to go home and help my mother with the housework and asked us to write an essay on the topic of "doing housework". When I got home, I couldn't think of any chores because there were some chores that I couldn't do.

It just so happened that my mom was very busy today and asked me to help her wash the dishes. I prepared the dishwashing tools first, with dish soap and two clean rags. To start washing, I first squeeze some dish soap and put it on a rag, and then use the rag to dip the water and brush the bowls, plates, and chopsticks without letting go of any dirt.

Then rinse the bowl with water. Finally, I carefully dried the bowls and plates that had been rinsed with another rag and placed them neatly in the cupboard. Then I wiped down the table, swept the floor with a broom, and tidied up the room.

Mom said happily: "Minmin, you have grown up and become a good helper for your mother." "After listening to my mother's words, my heart was happy, because I could do housework.

Students, you should also help your mother with housework at home!

Mom and Dad cook every day in our house, but today I thought: I've grown up, and I should cook by myself. It's a good way to show off your skills and surprise your parents!

When it started cooking, I put some oil in the pot first. But the salad oil bucket was so heavy that I couldn't lift it, and I couldn't put the spoon in the oil drum. What to do?

Suddenly I was overjoyed. I thought: Don't you have a jar of lard at home?

The hole in the top of the oil jar is so big, isn't it okay to scoop the oil out with a spoon? Why didn't I think of that just now? So I put the oil in the pot in this way, and then put some peanuts and sugar and salt in the pot.

Finally, I shoveled a few times with a shovel, and the fragrant peanuts were ready.

Then, I put three more duck eggs in the pot, and then, after a few stir-frying, I suddenly remembered that it was almost good, oh no! Salt and oil haven't been put yet! However, by the time I finished putting the salt and oil in it, the duck eggs were already in the pot.

Wow, how did you meet such an unlucky thing! Poached eggs have really become pot eggs now.

Finally, I poured the cold rice from noon into the pot, put a little oil, and the rice was finally ready. I tasted the food, except for the peanuts and poached eggs, which were not very tasty, the rice still tasted a little.

At this time, the wind was blowing, as if singing: children, please don't be sad, you are so capable, you are so amazing when you cook for the first time! Let me also go into the human world and taste your delicacies.

Although the meal I made today was not delicious, I felt very happy because it was the first time I had made my own meal!

It's Sunday, and it's the day of cleaning up in our house again. I was doing my homework, and I saw my mother sweating and cleaning, and I couldn't bear it, so I quickly put down the pen in my hand and ran over to help my mother with housework.

Our house is generally cleaned by cleaning windows, sweeping and mopping floors. The first step was to clean the windows, I first soaked the rag in a bucket of water, then found a chair and carefully stood on it to wipe the glass. I saw a thick layer of dust accumulated on the glass, and I wiped it vigorously over and over again, and after my efforts, I finally wiped the window clean.

Ah, I'm tired! After the windows are cleaned, it's time to sweep the floor. I found a broom, and hunched my back, my head bowed, bent over, and swept it earnestly with the broom in my hand. I carefully swept every corner over and over again, not even a scrap of paper.

I ended up emptying a whole bunch of garbage in the trash. In this way, the whole house is much cleaner.

After sweeping the floor, I started to check the floor and found that there was still some dirt on the floor. So, I got a mop, soaked it in a bucket of water, and mopped it up in earnest. I dragged and dragged on the dirt, and finally it was clean.

The dirt is gone, but the floor has become a "big face", and it can't be cleaned. By this time, I was very tired and sweaty. When my mother saw me like this, she was very distressed, so she hurriedly handed me a towel and said:

Kid, you're working so hard, don't do it. "I listened to my mother, and I really wanted to quit. However, my mind immediately conjured up the image of my mother sweating profusely doing housework.

I thought: Mom works so hard for me every day, what is my hard work! Thinking of this, I said:

Mom, I'm not tired. With that, I continued to mop the floor until the floor was clean. After my efforts, the house really became completely clean.

Although I am exhausted, I am still sweet to be able to do housework for my mother.

Essay: Doing Housework - Elementary School Essay.

On Sunday morning, my brother and I slept lazily, and when we got up, only my brother and I didn't eat, and my brother went back to the room after eating, and after I finished eating, because there were only two bowls for me and my brother, so my dad asked me to brush it, I didn't want to brush it, but my father said, "As long as you can, it's okay not to brush, but you won't now." ”

My mouth was pouting, but I didn't want to be scolded, so I had no choice but to ......After a series of ideological struggles, I reluctantly brushed the bowl ......But the more I thought about it, the more angry I became, I deliberately soaked the bowl to show that I didn't want to brush, and my father saw that I was emotional, so he was very angry, and he didn't do it, and just let me mop the floor.

Play with me! Let me mop the floor again, look at me small, and bully me! But if I don't mop the floor, the consequences will be ......

After a while, the neighbor came, and he praised me: "I am really capable, I have grown up, and I am ...... to be promising."When my father heard this, his anger was half gone, and he called me: "Don't drag the house after mopping, let's drag it tomorrow!" Drag it until one day you can mop the floor while laughing, and you can stop procrastinating. ”

Afterwards, I thought about it again: why did Dad want me to wash the dishes and mop the floor? Is it for my good? By the way, letting me wash the dishes is to exercise my life skills. Thinking of this, I smiled happily.