Elementary School Students 5th Grade Herbarium Paper 5

Let's go to the wind! Let's go to the wind! The classmates shouted happily. Because the teacher will take us to Zhongshan Farm today, according to others, it is indeed a "temperate plant museum".

On a sunny afternoon, we arrived at Zhongshan Farm. As soon as I entered the door, I smelled a burst of fragrance, and a beautiful osmanthus forest appeared in front of my eyes, from a distance, it looked like a yellow butterfly full of osmanthus trees. I walked over and found that it was very beautiful with four small golden petals surrounded by two cute little buds!

I started to think about it. I walked into the osmanthus forest in spring, and the osmanthus tree pulled out its branches and grew tender green leaves; As the seasons changed, I walked into the summer osmanthus forest again, and the leaves turned dark green; In autumn, the osmanthus finally blooms, and it adds a lot of vitality to this harvest autumn.

As we continued walking, a small river appeared in front of us. After a while, small white flowers will bloom in the river, and when the flowers are gone, they will grow chubby baby diamonds. A red dragonfly flies over the pond, like a small torch in the sunlight, which looks very beautiful.

The leaves of the ginkgo tree are like a small fan, fanning and fanning, fanning away the heat of summer and the coolness of autumn, but they give their own green and turn yellow.

Yes! Zhongshan Farm, you are so beautiful! It really deserves the reputation of "botanical type museum", and it makes me forget to return.

From the two Jin Dynasty to the Tang and Song dynasties, due to wars and famines, the Han people in the Central Plains in the Yellow River Valley were forced to move south, and after five major migrations, they were successively displaced to the south. Because the flat area has been inhabited, they have to move to the mountainous or hilly area, so there is a saying that "there must be guests in the mountains, and no guests do not live in the mountains". When the local ** registers the household registration of these immigrants, they are set up as "Hakka registration", called "customers" and "Hakka", which is the origin of the Hakka title.

In order to prevent the intrusion of foreign enemies and wild beasts, most of the Hakka people gather to live together, forming the Wailong House, the Walking Horse Building, the Five Phoenix Building, the Shiwei Building, the Four Corners Building, etc., among which the Wailong House survives the most and is the most famous, which is the concentrated embodiment of Hakka architectural culture.

The Wailong House began in the Tang and Song dynasties and flourished in the Ming and Qing dynasties. The Hakka people adopt the most advanced combination of beam-lifting and bucket-piercing techniques in the construction technology of the Han people in the Central Plains, and choose hilly areas or slopes to build the Weilong House, the main structure is "one into three halls, two compartments and one enclosure", and the building materials are sand, stone, earth, tiles, etc. The ordinary Wai Long House covers an area of 8 acres and 10 acres, and the area of the Da Wai Dragon House is more than 30 acres, and it often takes five years, ten years, or even longer to build a complete Wai Long House.

A Wai Long House is a huge fortress of the Hakka people. There are many bedrooms, kitchens, large and small halls, wells, pigsties, chicken coops, toilets, warehouses and other living facilities in the house, forming a self-sufficient and self-satisfied social group.

Regardless of the size of the Wailong House, there must be a piece of Heping and a half-moon-shaped pond in front of the gate, the Heping is used for drying grain, enjoying the shade and other activities, and the pond has the functions of water storage, fish farming, fire prevention, drought prevention, etc. Within the gate, it is divided into three halls, the left and right are divided into two compartments or four compartments, commonly known as the horizontal house, which extends backwards, at the end of the left and right horizontal houses, build a wall-shaped house, surround the main house, a dozen small rooms, more than 20 large rooms, and one in the middle is the "dragon hall", so it is called the "surrounding dragon" house. There are generally only one or two dragon houses in small dragon houses, and there are four, five or even six dragon houses in large dragon houses, and there is a 6 dragon house in Hualuodun House in Xingning.

The common characteristics of the enclosed house in the building are to take the north and south meridians as the central axis, the east and west sides are symmetrical, the front is low and the back is high, the main and secondary are distinct, the location is orderly, the layout is regular, the pond in front of the house and the "Wai Long" behind the main hall are combined into a whole, and dozens or hundreds of living units are set up in the hall and patio as the center, which is suitable for dozens of people, more than 100 people or hundreds of people living together in a house, and there is also a study room and a martial arts training hall to pay attention to, which is breathtaking.

The design and construction of the Wai Long House integrates science, practicality and ornamentality, showing the outstanding talent and superb skills of the Hakka ancestors. Together with the courtyard houses in Beijing, the caves in Shaanxi, the "pole railing" in Guangxi, and the "one seal" in Yunnan, Weilongwu is called one of the five characteristic residential buildings in China by Chinese and foreign architectural circles. Nowadays, the Hakka people have walked out of the closed Wailong House, out of the narrow mountain gate, and into the vast world, and the Wailong House has become a historical relic and a unique landscape.

At present, there are hundreds of Weilong houses preserved in Meizhou City within 40 kilometers of Meizhou city and suburbs.

The plant is small.

On good at. Essay Writing Essay Elementary School.

5th grade?

Plants are all grown on sunlight.

That's all there is to it.

Math problems in the renminbi.

One day, I went to the mall with my mother. Mom went into the supermarket to buy something and asked me to stand at the place where I paid and wait for her. I didn't have anything to do, just watched the salesman and aunt collect the money.

Looking at it, I suddenly found that the money collected by the salesman aunt was 1 yuan, 2 yuan, 5 yuan, 10 yuan, 20 yuan, and 50 yuan, and I felt very strange: why is there no 3 yuan, 4 yuan, 6 yuan, 7 yuan, 8 yuan, 9 yuan or 30 yuan, 40 yuan, 60 yuan? I quickly ran to ask my mother, and my mother encouraged me to say

Use your brain and think about it, Mom believes you can figure out why for yourself. I settled down and thought about it carefully. After a while, I jumped for joy :

I know, because as long as there are 1 yuan, 2 yuan, and 5 yuan, you can form 3 yuan, 4 yuan, 6 yuan, 7 yuan, 8 yuan, and 9 yuan at will, and as long as you have 10 yuan, 20 yuan, and 50 yuan, you can also form 30 yuan, 40 yuan, and 60 yuan, and ......My mother nodded and asked me another question: "If it's just to be able to combine at will, isn't it enough for only 1 yuan?" Why do you need 2 yuan or 5 yuan?

I said, "It's not convenient to use just 1 yuan to form a larger number." My mother smiled with satisfaction, and praised me for being observant and using my brain, and I was more comfortable listening to it than eating my favorite ice cream.

Here, I would also like to tell other children: in fact, there are math problems everywhere in life, as long as you pay more attention to observe and think more, you will have a lot of unexpected discoveries, if you don't believe it, you can give it a try!

Today, I competed with my grandparents to make dumplings.

Grandma wrapped 6 in a minute, I packed 2 in a minute, and Grandpa packed 4 in a minute. How many can grandma pack in 20 minutes? 20*6=120 (only).

Me: 20*2=40 (only), grandpa: 20*4=80 (only).

In this way, I made exactly 3 times as many dumplings as my grandmother, and my grandfather and I made exactly as many dumplings as my grandmother. But my grandfather and I took 40 minutes, and my grandmother only took 20 minutes, which was twice as long as ours. You can also calculate how much time the three of them shared?

20*3=60 (minutes), how many can you count as a total of three people? 120 + 80 + 40 = 240 (only). You can also calculate the weight:

One dumpling is ten grams, then 240 dumplings are 2,400 grams. You can also use money to calculate: 240 dumplings cost a total of 7 yuan and 2 jiao, and now you can calculate how much each dumpling costs?

7 yuan 2 jiao = 72 jiao 72 240 = jiao, each dumpling is 3 minutes ago.

Although this is just a dumpling-making session, I think it's very interesting, I can't do without mathematics everywhere in life, and I must learn mathematics well!

I think such a teacher is allowed to write such an article in order to show his ability, and elementary school students write **?! It's pure nonsense, such a teacher doesn't seem to have a thought!!

This is all over the Internet, but you better write it yourself, don't think about being lazy, it's not good for yourself!!

Early this morning, I wanted to look at the computer, but the computer was occupied by my father, I was not convinced, and said, "Why can't I watch it?" Dad smiled and said

Then let's play a game, grab 30, you lose and I look at the computer, and if you win, you see, okay? "I thought to myself: What the hell is Daddy up again?

Whatever! Play and play, who is afraid of who! I agreed.

The rules of this game are very simple: each person can report a maximum of 3 natural numbers at a time, and at least 1 natural number, and the number can not be repeated or skipped, and whoever reports 30 first will win.

It's easy, I played a game with my dad, and I lost. I was not convinced, and came a few more times, and I won and lost. Is there any other pattern?

I noticed that every time I grabbed the number 26 first, I was sure to win. Because if I grab the number 26 first, and there are 4 numbers to the number 30, according to the rules of the game, the maximum number reported is 3, and the minimum is 1, then, when Dad reports 1 number "27", I report "three numbers, I will grab 30 first; When Dad reported 2 numbers, I reported 2 numbers, and I could grab 30 first; When Dad quotes 3 numbers, I quote 30 and I win. It seems that reporting the number 26 first is definitely a guarantee of victory.

So, apart from grabbing the number 26? What numbers do I have to decide which numbers I have to grab in the previous rounds to ensure my victory? According to the method of grabbing the number 26 first, I made an calculation:

If I want to win, these numbers are what I want to keep in mind in each round, they are .So, is this the rule in this game?

I found the pattern and played with my dad again with confidence, my dad said 1, 2 first, I saw my dad 2 grabbed, and I couldn't help but be a little anxious. I said 3, 4, Dad said 5, 6, and Dad grabbed 6 again! I said 7,8,9, Dad reported 10,11,12, I hurriedly reported 13,14, and I was secretly happy in my heart, I finally grabbed 10!!

Then, Dad reported 3 numbers, and I reported 1 number; Dad will report 2 numbers, and I will report 2 numbers; Dad reported 1 number, and I reported 3 numbers. I'm victorious! Dad was not convinced, and played a few more rounds, but I mastered the rules, and I won no matter what.

Dad asked, "Why is it so coincidental?" I said with a grin

It's not an accident, it's a coincidence, I've found a pattern! Dad also smiled: "Actually, I also know, you are really smart."

Then, my father explained the rules again. This cunning daddy! If you don't tell me, let me bother with it!

It turns out that there are so many mathematical rules in the game! We only need to use our brains to find them.

One day, I went to the supermarket with my mother. And there are two kinds of coke, both of which are the same price, but they are different in size. There was a bottle of Coke. The net content is 7ml, and one bottle is also said to be 7ml. So I bought both.

I went home and measured this cola with a ruler. length and width, height. It was found that there was a bottle that was one long, one wide, two high, and three.

1 2 3 6 cm 6ml Another bottle is two long, three wide and four high. So I told the owner of the store that the Coke had the wrong net content.

Since the second semester of the fifth grade, we have learned the main content of the surface area, volume and fraction multiplication of cuboids and cubes. In the cuboid and cube surface area unit, there are many typical problems, and these problems usually cause us to think confused and make mistakes. Next, I will analyze a question that has been repeatedly wronged.

The title goes like this:

A rectangular fish tank, 6 meters long, 2 meters wide, and 1 meter deep, how many square meters of glass do you need to make this fish tank?

Here's how I did it :

Analyze my approach:

I first calculated the total area of the 6 sides of the entire fish tank, and then subtracted the area of the missing surface (above). Because the fish tank is to keep fish, it cannot be completely closed, and it is often the top as the mouth of the tank, so the area above should be subtracted.

There are many ways to do this, and there is another way to do this question:

Analyze such practices:

It is known that there are 5 sides of the fish tank, of which the front and back are a group, the left and right sides are a group, you can first calculate the total area of the front, back, left and 4 sides, plus the area below, you can find the area of the 5 sides of the fish tank, that is, the surface area of the fish tank.

The most error-prone places:

There are two things that are easy to make mistakes in this type of question. First, the surface area of the fish tank is calculated as 6 faces; Second, although I know that there are only 5 surfaces in the fish tank, I don't know how to calculate the small surface area.

My suggestion: when you do this kind of problem, you should draw a picture to help you, and mark the corresponding numbers of length, width, and height on the figure, so that the problem is clear at a glance and you will be handy to do. Also, pay attention to whether the units are consistent!

The above is my analysis and insight on the "fish tank problem".

Auntie's math problems.

My mom opened a stationery store, and today is a Sunday, and my mom has something to do and asked me to go to the store. After a while, an aunt came, and she said that she had to test me before she could tell me what to buy, and she said, "Li Hui bought a pencil and an exercise book, and it cost a total of yuan."

An exercise book costs twice as much as a pencil. How much do pencils and exercise books cost? I thought about it:

The exercise book and the pencil are three times in total, as long as you use it, you can find the pencil's **, and the exercise book's ** can also be found. I said the answer, and my aunt praised me: "It's good to be able to analyze the question carefully!"

I want to buy 10 copies of each exercise book and give you the yuan, no need to look for it, how many exercise books should you give me, how many copies of the text? I thought for a while and said, "Let's assume that 10 books are all texts, and you need 10 yuan, and you actually pay yuan, which is less than the assumption, and the actual texts are more diverse than the exercise books, then you can find that the exercise books are books, and the texts are 10-3=7 books."

I figured it out, my aunt praised me for being smart, I was happy in my heart, and then my aunt bought a few kinds of stationery, and I was still immersed in joy when I checked out, but I miscalculated the money, I didn't find out, but my aunt said to me: "You, you will get carried away when you praise you." I misread the decimal point of the money I should have paid, and as a result, I paid less.

I'm sorry, the decimal point has moved one place to the left, 10 times smaller than the original **, a difference of 9 times, as long as the yuan, because it was reduced by 10 times just now, so I want the yuan. "Auntie bought a few more stationery and left.