Math Papers of First-year Students (1)
Counting bottles
Our balcony is full of all kinds of plastic bottles, large and small. It's the New Year, and my mother said to clean it up together. Dad said: large plastic bottles are 20 cents, small plastic bottles 1 cent. How much are these bottles worth? I want to compete with my mother. ?
The game started, and I added them up one by one: 1, 2,3 * * Yes? Mom smiled and said:? I've figured it out. It's 50 points for 3 yuan. ?
I said unconvinced:? How can you calculate so fast?
Mom said:? You see, put a bunch of big plastic bottles and a bunch of small plastic bottles, and add them, won't it come out soon?
? Yes, when the teacher taught us math, 10 sticks tied together. Isn't it the same as counting bottles?
I divided them up again and counted them quickly. I am very happy. It turns out that we can use mathematics knowledge everywhere in our lives. I want to learn math well.
Math Theses of First-year Students (2)
Color of mathematics
In the morning, the bright red sun reveals half a smiling face, and the harmonious sunshine spreads all over the world. I'm in a really good mood. Suddenly I got a call from my grandfather and asked me to calculate 9.5 plus 99.5 skillfully. I told him at once: nine plus 99, plus one, isn't it 109? Grandpa said my algorithm was not clever, and it would be much easier to calculate if I rounded up and reduced the score. I immediately interrupted grandpa and told him:10+100-1=109 (yuan). At this time, my grandfather praised me and said that I was still smart. This is the math problem in the morning. I marked the math in red.
In the morning, my father came back from the bank to pay the electricity bill and asked me to calculate the electricity bill. Electricity consumption ranges from 1079- 1279 (kwh), and the unit price per kwh is 0.38 yuan. I calculated 200 kWh carefully, and I changed the unit price to 38/ 100. The formula is 200? (38/ 100), equal to 76 yuan. Dad said yes, just like a computer. I was so proud that it was nearly noon at this time, and I decided that math was yellow.
In the afternoon, my sister and I cut watermelons at home, and then cut half a watermelon evenly into two knives, and the two knives are 2/3. I asked my sister how many parts are these two watermelons? My sister is only in the first grade, of course not. I told her that the whole watermelon is 1, the first score is 1/2, and its score is 2/3. The result of multiplication is that these two copies are 2/6 of the whole watermelon, and after the score is reduced, it is 1/3. At this time, I remembered that my grandfather once said that the seven colors of sunlight are all white, so this math is white.
In the evening, under the blue starry sky, I watch TV with my mother. I never understood how archaeologists calculated the height of the big Al dinosaur from the fossil leg bones. Mom said that this kind of blue math will be natural when you grow up.
There is too much math in life. It's really colorful, and it appears at your side at any time. I like math. I want to learn math well.
I have a grandmother who likes to pick up bottles. The yard is often full of all kinds of waste bottles. I often throw bottles about. Grandma saw it and said, these bottles are very useful! I haven't been to school since I was a child. I learn arithmetic with these bottles! ? I don't believe it at all.
Grandma touched my head and smiled and said, don't believe us! ?
I said:? All right! ? Can't I compete with you? I am not bad at math in my class.
I quickly called my father to be the referee.
Dad took a dozen bottles, put them on the ground and said, small plastic bottles cost 50 cents, cans/kloc-0 cents, and large plastic bottles cost 20 cents. ?
The game started, and I added them up one by one. ? 1 min, 20/min, 25/min. According to my calculation, 3 yuan scored 50. ? I smiled proudly at grandma. Who knows that my father gave me a note that read: 3.5? . Only then did I realize that grandma had made up her mind.
I asked my grandmother unconvinced: How did you get there so fast?
Grandma said:? You see, if we divide them into small bottles, cans and large bottles first, wouldn't it be quick?
? Yes, when the teacher taught us to count sticks, we tied 10 sticks together. Isn't it the same as counting bottles?
? Grandma, let me help you figure out how much a bottle costs.
? All right! My granddaughter will help me with my work. ?
I'll sort them first, and then count to ten. I'll be fine in less than ten minutes. I am ecstatic.
Dad smiled and said to me:? Qingqing is great! ?
I also smiled and said to grandma and dad:? I find math really useful. I want to learn math! ?
Math Theses of First-year Students (3)
Mathematics is everywhere in the world. Really, as long as you pay attention to observation and be good at thinking, you will feel as if you are in the ocean of mathematics. Yes, mathematics is everywhere. This holiday, I deeply felt this.
My stomach is playing crazy music for no reason. So hungry? I groaned. ? Come on, have an apple! ? Or is it better for mom? But but what? Eat an apple, no buts. I asked with a smile, reaching for a big red apple. Who knows, my mother grabbed the apple and took it away, mysteriously. I have a blank face. What medicine does mother sell? I'm impatient? Mom, stop eating. Don't let anyone eat it. Mom still washes apples with a smile. Eat, who said not to let you eat? Didn't I wash it? Oh! ? I still look puzzled. ? However, I still have one request. ? I knew something was wrong when I finally said it. ? What requirements? I'm a little angry. It just eats an apple. Why are there so many demands? ? Haven't you studied volume? Yeah, why? Is this related to eating apples? I thought to myself. ? So, can you bring mathematical knowledge into your life and calculate the size of this apple? Mom smiled again, as if she looked down on me, and a force rose in her heart. Well, I must show it to you! Sure!
So, I quickly took this mouth-watering red apple in my hand and wondered how to calculate the volume. Apple is neither a cuboid nor a cube, nor a cylinder. How to calculate its volume? I am vacillating and have no idea. At this time, my stomach is still growling. I can't keep my promise and eat it. I can't let my mother look down on me. Please, there must be a good way. So I summon up courage again, hold back my hunger, and continue to bury my head in thinking.
After a while, I finally realized that I couldn't use the cup. First, I put some water in it and recorded the water level. Then put the apple into the water. At this time, the water level has risen a lot. Then write down the rising water level. Finally, the size of the apple can be calculated by subtracting the previous water level from the rising water level. I was so happy that I reported the experimental results to my mother. My mother smiled with satisfaction this time.
I munch on apples, which is the sweetest food!
Mathematics is everywhere, don't you think?