A freshman writes in my math teacher s diary

1 All This afternoon, I had nothing to do at home, so I picked up a math extracurricular book and flipped through it, and I saw that there was such a problem:

Red wrote a seven-digit number with 3 "8s" and 4 "0s", and when Red read the number, her grandmother only heard Red read two "zeros". Q: What is the possible number that Xiaohong wrote?

I pondered, pondered, and pondered, and finally came up with four different answers in order, and these four different answers were .

From this question, I learned that no matter what question you do, you can't just be satisfied with coming up with one answer. When considering problems, we must be comprehensive and orderly, and develop good thinking habits, so that we can really learn mathematics well.

Comments: (From this diary, it can be seen that this student is good at thinking and is very organized in thinking about problems.) It can be seen that mathematics is a thinking system trained from multiple perspectives. ）

Today is Monday, I got up at 6 o'clock in the morning, spent 10 minutes washing, 5 minutes for breakfast, just finished breakfast and didn't know what to do, my mother asked me to go grocery shopping with her.

There are so many vegetable farms, I haven't been here for a long time. At this time, my mother was buying watermelon, watermelon yuan a pound, my mother bought a watermelon exactly 7 pounds, my mother handed my aunt 10 yuan, my aunt found the yuan, I said: "Auntie, buy 7 pounds of watermelon for one pound, a total of yuan, my mother gave you 10 yuan, you should get back the yuan, you found 1 yuan more aunt."

Afterwards, my mother praised me for being an honest child, and I was very happy, it seems that mathematics is really everywhere in life!

"Mathematics Diary" is a diary in which students record their feelings and experiences in the process of learning and applying mathematics. Mathematics diary not only truly reflects the learning situation of students, but more importantly, it relatively objectively reproduces the interaction between teaching and learning, through the way of diary, students can summarize the content of mathematics they have learned, can write their own gains and confusion like talking with their good friends, and can also inspire them to use "mathematics diary" to observe life, so that they love life more.

I think it's a matter of adding some numerical calculations to my life diary and so on. For example, the family's monthly expenses for rice, flour, oil, electricity, water, and gas, and bargaining for their own things, I don't know if it's okay?

Today, I came across this incredible statistic in a book: "How can a piece of paper with a thickness of centimeters be higher than Mount Everest after being folded in half 30 times?" ”

No matter how you listen to this data, I think it's a little too "ridiculous". After all, it is a thin piece of paper, can it really surpass Mount Everest by folding? But a lot of unexpected things can happen, so it is only through calculations that the mystery of all this can be revealed.

Immediately, I multiplied the centimeter by 2 consecutively, for a total of 30 times, to get the centimeter. Then, I converted the height of Mount Everest into 884813 centimeters, and by comparison, it was clear that the thickness of the paper after 30 folds was indeed better than the height of Mount Everest, and it was more than 10 times that of the latter.

In fact, amazing data like this is everywhere in ordinary life, as long as you have a pair of eyes that are good at discovery.

1 All teachers, I want to say to you: your eyes have given us a lot of encouragement and support, look at your clear eyes, our every move in the classroom can not escape your vision, and it is precisely because of your beautiful eyes that we have changed the bad habit of not concentrating, and the encouraging gaze in your eyes.

The night is getting deeper, and there are thousands of windows, only yours is still lit, and a tired figure is still concentrating on preparing for class. Teacher, I would like to say to you gently: Teacher, it's time for you to rest.

How many sleepless nights, you are always at your desk to correct our homework, and the handwriting in the homework book is full of your love for us. Some people compare you to a beacon that uses your light to guide passing ships. It's not just a simple metaphor, it's a lot of praise for you.

You are as kind and amiable as your dear mother. Whenever I do something wrong, you use kind words to make me correct it. It was my parents who gave me my body, and it was my hard-working teachers who nourished my soul.

Teacher, I would like to say to you gratefully: Thank you for your sincere teachings to me, whenever I make mistakes, your heartfelt words have made me understand a lot, since you came to us, you have cared for me like a mother, let us thrive under your care.

Your teachings have given me infinite strength, and your teachings have nourished our parched hearts like a sweet spring. That's when I really understood what it meant to be well-intentioned.

Teacher, I would like to say to you: your eyes have given us a lot of encouragement and support. Look at your clear eyes, our every move in class can't escape your vision, and it is precisely because of your beautiful eyes that we have changed the bad habit of not paying attention, and your eyes are bulging.

Li's gaze has made us understand a lot and affirm a lot. Your stern gaze has looked at me, your considerate eyes have paid attention to me, and every silent word you have taken to heart, and often he will come out to motivate me and motivate me to study hard!

Teacher, I also want to say to you: thank you for your teaching, thank you for your dedication to us, we are your students, growing day by day, and sending them to the places where the motherland needs them.

The Peach Blossom Lake is thousands of feet deep, and it is not as good as the teacher to educate me.

The word "birthday" has brought happiness and joy to many people! I would like to thank my birthday for having the happiest yesterday, perhaps, this is the milestone of my growth; Just yesterday, I learned more and more ......

I used to say that time never goes back, and I never seem to realize it! Until yesterday, the word "birthday" reminded me, and I seemed to hear a warm whisper: "You are eleven years old!" ”

In the morning, it was raining heavily, and it was getting heavier, will the plan still go as planned? My parents were so happy, they signaled me to hurry up and take the car to "KFC", at this moment, I was really moved, and what I didn't expect was that my parents were waiting for me in "KFC", it was so beautiful here, there were all kinds of birthday cardboard pasted on the wall, and there were two pots of flowers next to it, one was an unknown flower that was fiery red, and a pot was a flower that bloomed like a small trumpet. The friends who were waiting on the side early, they were received here early in the morning by their fathers.

After a melodious and happy "birthday song", I blew out eleven candles in one go. Dad suggested, let's have a competition: whoever can name their parents' birthdays will be awarded a piece of cake ......Suddenly, the noise stopped.

My heart is so quiet, my tears are moist, over the years, my birthdays have always been so rich in different places, but I have never attended my parents' birthday party? I don't even know their birthdays!

I really want to say to everyone: "Dad, Mom, I remember today's birthday party, and I also remember the care you have given me over the years, you will always be the light in my heart!" As the famous Albert Einstein said

Remind myself every day that my life depends on the labor of others, and that I have to do my best to repay what I have received and what I am still receiving."

Walking out of "KFC", the rain is still falling, looking at the pound of heavy rain, I am especially grateful again: this heavy rain cleanses my heart, I am grateful to my parents, and I have paid too much love for me; Thank you friends for letting me have such a special birthday party: thank you for my birthday, let me have today's growth!