Start preparing. I brought two paper cups, a needle and a meter-long cotton thread. Just do it and start doing it. According to the requirements of the article, I carefully put the cotton thread through the pinhole of the country, took a cup, took off the cotton thread and tied a knot at the top of the thread. Similarly, put a rope on another cup.
I don't know if my experiment was successful, so I called my sister to help me finish it. I said to her, "Sister, I made a phone call. Let's try it. "
"Will you call?"
"I made a' earth phone'."
While speaking, I handed one of the paper cups to my sister. I asked my sister to put the paper cup on her ear. I asked softly in another paper cup, "Did you hear that?"
My sister said, "No, the voice I heard didn't come from the phone."
At this time, I am a little confused. I obviously made the mobile phone according to the steps in the article. Why did I end up failing? No, I must have missed a step.
I read the article carefully again. I found the problem! It turns out that the better the rigidity of an object, the stronger its communication ability. Just like, the tighter the telephone line, the better the rigidity, and the easier it is for sound to spread. However, when the cotton thread is slack, the sound cannot be transmitted. Even if the sound is heard, it is transmitted from the air.
I asked my sister under the tight cotton thread, "Did you hear my voice this time?" My sister said, "I heard you! I heard it! " I was so excited, so the two of us chatted on the earth phone.
Thanks to Science Fair magazine, I realized the happiness brought by scientific experiments.
2. Do a small experiment with cups, water and paper and write a composition. Wu Lili, Class Two, Grade Five, today, the teacher taught us to do a fun and interesting scientific experiment-eggs float.
After listening to the teacher, I was curious. The teacher brought two cups of water and two raw eggs of the same size. Then the teacher gently put the eggs into the water at the same time. "Wow," the students shouted in unison. I saw one of the eggs sink to the bottom of the water and lie quietly like a baby. Like a submarine patrolling the seabed; Still like a glittering and translucent gem waiting for you to dig; Another egg magically floated to the surface of the water as if by magic, floating on the surface of the water like a table tennis ball; Like a whale showing its white belly; Like a person lying in a chair in the sun; Like a small fish jumping out of the water to breathe; Still like a duckling swimming happily on the water.
The teacher said, "It is salt water that makes the eggs surface." I suddenly realized that this experiment was really interesting.
Today, the teacher taught us to do a fun and interesting scientific experiment-floating eggs. After listening to the teacher, I was curious. The teacher brought two cups of water and two raw eggs of the same size. Then the teacher gently put the eggs into the water at the same time.
"Wow," the students shouted in unison. I saw one of the eggs sink to the bottom of the water and lie quietly like a baby. Like a submarine patrolling the seabed; Still like a glittering and translucent gem waiting for you to dig; Another egg magically floated to the surface of the water as if by magic, floating on the surface of the water like a table tennis ball; Like a whale showing its white belly; Like a person lying in a chair in the sun; Like a small fish jumping out of the water to breathe; Still like a duckling swimming happily on the water.
3. How to make a penguin from a paper cup? Today, I will tell my classmates how to make a penguin out of paper cups.
First take out a paper cup and a piece of cardboard, and turn the paper cup upside down on the cardboard. Draw a circle along the mouth of the paper cup, and then draw two feet, two wings and a small mouth of the penguin. Be careful not to draw too wide. After painting, cut them along the trace, and the first step is completed. Stick the cut round cardboard and feet on the cup mouth, and then stick the wings and mouth on the cup body respectively. The second step is completed. The third step is the simplest, which is to color the cup. Don't forget to leave room for the penguin's eyes and stomach. As for what color to paint the little penguin, it depends on what color the students like.
The penguin is finished. Do you think it looks good? What did you do? Come and teach me!
┏ (^ω^)=
4. Writing a composition with a cup [composition cup] The cup is very ordinary. A breeze blows, and the cup blows with ripples, faint tea fragrance and deep love, which fills my heart with a happy world, composition cup.
In the morning, when a few birds stood motionless on the windowsill and eavesdropped on my reading, my mother took a steaming cup of soybean milk with small steps, drank it, put down the cup, and there was still a little warmth in her hand, which made me refreshed all day. In the evening, under the light, I took a cup of warm milk from my mother. When I look up and see my mother's concerned face and loving eyes, I will think of Grandma Bing Xin's words: "Xiaohua, I also want to look up and thank Spring for her love-however, that deep kindness made her finally silent.
Mom! Were you that spring? "It reminds me from time to time to feel the dribs and drabs of maternal love with my heart, just like taking flowers to thank spring. Every warm afternoon, I like to stand in front of the bookcase and enjoy it. The sun shines obliquely on the spine of the book, reflecting familiar and unfamiliar names: Andersen, Tang Sulan, Mei ... At this time, my mother will open the half-closed door and bring me a cup of fragrant scented tea and one or two exquisite snacks. The fragrance of tea intoxicates me, and books bring me pleasure. The stories in the book always make me feel warm.
Once, I got chicken pox, and my mother was afraid of leaving scars on my skin. Every day after work, she cooks Chinese medicine for me until late at night, and brown Chinese medicine finally comes out. Although it tastes bitter, my mother's concern makes me feel that all my internal organs are sweet. June 15 is my mother's birthday. I ran around the store, going door to door to choose the right birthday present. Sweat dropped one by one, and I finally chose a crystal clear glass. I also want to make a cup of fragrant tea every day and give it to my mother. Thick and flowing.
That cup, that ordinary cup, warmed my eyes and taught me to love my mother and life.
5. Writing paper cups as pen holders. Paper cups as pen holders
After reading the lesson "Inflatable raincoat", I also want to do something.
I don't know what to do if I think about it. Just when I didn't know what to do, Li Lai died. When father saw him coming, he gave us an idea to make a pen container together. Hearing this idea, we all agreed, but what about the pen container? Dad told me the secret of making a pen container, and we started immediately after listening. First, we made the paper into a barrel, but it didn't roll round. Just when we were depressed, dad gave us an idea to put the paper cup in the middle. So we tried and it worked. After making the drum, cut out a rectangle from the cardboard, then stick the drum on the rectangle, then draw your favorite picture on colored paper and stick it on the pen holder. My classmates and I finally finished the pen container.
We both looked at the pen container and smiled happily. This is the first time that we have done manual work. Although it is not perfect, I believe we can make better things in the future.
6. Write a paper cup lantern in 500 words. Today, I made a lantern with my mother.
At first, my mother and I had no idea at all, and we didn't know where to start. We both think it's too difficult to do, and we both feel a little disheartened. Suddenly, Tong Tong said to check online, what should I do.
Then my mother went online to check, and my mother and I wanted to find a simpler, faster and better one. Looking and looking, I finally found a lantern made of paper cups, alas! This is simple. Let's make lanterns out of paper cups.
Next, Tong Tong went to get two paper cups, double-sided tape, scissors, red colored paper, wool, chopsticks and gouache paint, and began to make them. In the first step, we take two paper cups, cut them into strips and squeeze them into the belly of lanterns. It's simple.
Make a hole in the bottom of the paper cup, then thread it with wool, tie a knot at the bottom and fix it with chopsticks at the top, and the lantern will basically take shape. Paint the paper cup red with gouache, cut it into strips with red paper, and tie it at the tail of wool to make the red ears of lanterns.
Finally, of course, the pole for picking lanterns and chopsticks are the most suitable. It will be more beautiful to roll up chopsticks with a piece of colored paper.
How's it going? Is it exquisite? When it was finished, my mother and I laughed our heads off. Great, well done ... Of course, my mother has an indelible contribution, so I can finish this work with her help. Thank you very much, mom.
7. I want to write a composition about cups. The cup is on the top and the teapot is on the bottom.
A disappointed young man came all the way to Liu Fa Temple and said to the abbot Shi Yuan, "I am bent on learning from Dan Qing, but I have not found a teacher who can satisfy me."
Shi Yuan asked with a smile, "You have been wandering for more than ten years, but you really haven't found a teacher?" The young man sighed deeply and said, "Many people are in name only. I have seen their paintings, and some of them are worse than me! " "Shi Yuan smiled and said," Although the old monk didn't know about painters, he ordered a boat to drive the couple away and didn't lift stones. He likes collecting some famous works. Since the donor's painting skills are not inferior to those of famous artists, please leave the bag to the old monk. As he spoke, he ordered a young monk to bring a pen and inkstone and a pile of rice paper. "。
Shi Yuan said, "The old monk's greatest hobby is drinking tea, especially those tea sets with smooth and concise shapes. Can the donor draw me a teacup and teapot? " The young man listened and said, "It's not easy." So I mixed a inkstone with thick ink, spread out rice paper, and drew a tilted kettle and an elegant teacup with a few strokes. The spout of the kettle is slowly spitting out a vein of tea and pouring it into the teacup. The young man asked Ishihara, "Are you satisfied with this painting?"
Shi Yuan smiled and shook his head.
Shi Yuan said, "Your painting is really good, but the teapot and teacup are misplaced. It should be the teacup on the top and the teapot on the bottom. " Hearing this, the young man smiled and said, "Why is Master so confused?"
Shi Yuan smiled and said, "So you know this truth! You are eager to fill your cup with the fragrance of those artists, but you always put your cup higher than those teapots. How can you make your cup full of fragrance? Jane put down her body to get water; Only by lowering yourself can people absorb the wisdom and experience of others. "
The young man thought for a long time and finally understood.