Mathematics Weekly Diary
A busy and fulfilling week has passed. In this short period of time, we must have had a lot of feelings and confusions. At this time, how can we leave down the most critical weekly diary! How to write a weekly diary to attract more attention? Below are 4 mathematical weekly journals that I have collected for you. You are welcome to share them. Mathematics Weekly Chapter 1
Colorful and intoxicating, this is the beautiful Yangtze River Road.
Driving on the Yangtze River Road, you can enjoy the beautiful scenery in the car. Suddenly, my mother said: "There is mathematics here!" "Where is it? Where is it?" "Look for it! You can't find it. Let me remind you, please carefully observe the isolation belt. What are the patterns in it?" I scratched my head with one hand and looked at it: "Nothing?" "Look, some have flowers and plants on them, and some have trees growing on them... Do you understand?" "Oh, that's it!" "What if? "This isolation belt is 800 meters long. What questions can you ask?" "I have already thought of this. Let me tell you! If the isolation belt is 800 meters long, there will be one area with flowers and one area with trees." The total is 1 group, and 1 group is 50 meters. How many trees can be planted? 800÷50=16 (group) can plant 16 groups. "My mother deliberately embarrassed me and said, "I have another question." Come and see how it goes," I said proudly. "If 1 block is 1 group, and 1 block is 25 meters, then 800 can be planted with 800÷25=32 (groups), and 32 groups can be planted." "Mom, I have an easier way: Since the above two blocks form 1 The group is 16 yuan. Here is 1 yuan for 1 group, that is 2÷1=2 2×16=32 (group). "My mother touched my head and praised me repeatedly.
Mathematics is really interesting. We must take good math classes, so that nothing in life will ever trouble us. Mathematics Weekly Chapter 2
The piggy bank is already heavy. How much money is there? My mother and I poured out the coins in the piggy bank. It was piled like a mountain on the table.
Let’s first divide them into three categories: one pile for 1 yuan, and another pile for 5 jiao and 1 jiao. Then my mother counted the 1 yuan ones, I counted the 5 jiao ones, and the two of us counted the 1 jiao ones together. After a while, they were counted. It turns out that there are 65 pieces for 1 yuan, 46 pieces for 50 cents, and 50 pieces for 1 dime.
How much does it cost? I started calculating. 65 1 yuan is 65 yuan, 46 50 cents is 23 yuan, and 50 1 dimes is 5 yuan. The column formula is: 65+23+5. I think: You can add 65 and 5 first, which is equal to 70, plus 23, one *** is 93 yuan.
The inconspicuous change turns out to be 93 yuan in savings! Now, I can buy the book "Mathematical Wisdom" that I have longed for. It’s great to save money!
Angles in life
Last semester, we learned about acute angles and obtuse angles. There are angles everywhere in our world, such as: the corners of our books, and our rulers are particularly It is a triangle ruler. It has three angles, two of which are acute angles and one of which is a right angle. The right angles are square, like tall and straight cypress trees. How majestic and proud!
In our lives, we can often observe the existence of horns. When we were doing radio gymnastics in the morning, I found that horns can be clearly represented by human limbs. With your arms straight and your feet together, it forms a right angle. If the body is not moving, if the arm is tilted downward, it will be an acute angle, and if the arm is raised, it will be a large obtuse angle. My classmates and I can learn from each other by using our bodies to express horns. The fun of horns lies in discovery.
How much do you know about light tubes?
I went to my aunt’s house in Baoding during the winter vacation this year and saw that the new “pedestrian street” near her house was completed. My mother and I couldn't wait to go shopping.
The pedestrian street is so beautiful. The marble floor was so bright that people could be seen. The street lights on both sides have unique shapes, with cylindrical blue pillars inlaid with various colored light tubes. I was admiring it with gusto, but my mother said: "Count it and see how many light tubes there are on this street."
Count them one by one, it must be the most Stupid way. I thought for a while, why not count the light tubes on a pillar first, and then see how many pillars there are in a row?
After thinking about it, I will act immediately. It turns out that there are 7 light tubes on one pillar. There are 10 pillars on one side of the street, which means there are 10 7-tube lamps. Calculate by multiplication: 7×10=70 (tubes). There are 1 *** on both sides of the street: 770=140 (roots).
After listening to my explanation, my mother praised me and said: "The multiplication is very clever and the calculation is very detailed. Awesome!"
The weight of objects in life
< p>Tonight, my mother and I went to the supermarket to buy things. Because I just learned "kilograms and grams", I looked at the weight of each item.Let’s buy food first, a 400g bag of milk powder, a 260g bag of Taigu cakes, a 118g bag of crispy dates, a 100g box of Kinder chocolate, a 60g bag of pickled mustard, and finally The lightest ones are Green Arrow mints, 23 grams? I bought a lot of things, and how many grams do they weigh? They are all relatively light. I said, "Why isn't there anything weighing a kilogram?" Mom said, "Of course there is.
"Then he took me to the place where grain was sold, and I immediately saw a big bag of 10 kilograms of flour. This was too heavy, and my father had to come to buy it. When I bought lemons, I found that the price tag said 500 grams and 12.80 yuan. What does this mean? It turns out that 500 grams is what people often call 1 catty, so 1 catty of lemons costs 12 yuan and 8 cents.
Now I not only know that 1 kilogram = 1000 grams, but also know that 500 grams = 1. Jin, so 1 kilogram = 2 kilograms. The weight of the kitten
After a while, the kitten has been in my house for 3 months. I thought how much the kitten would weigh. I went up to the scale to weigh it. Unexpectedly, as soon as I put it on the scale, it ran away with a "meow" sound. I had an idea, ah, I got it! It came out weighing 45 pounds. Then I put the kitten on the scale and subtracted 42 from 45.
It turns out that my kitten only weighs 3 pounds. It’s so heavy, no wonder it’s so weak. Mathematics Weekly Chapter 3
Every string of numbers interprets a different result; every result has its own meaning; every calculation is full of interest; every calculation is full of interest. Every graph has the beauty of lines, and every formula contains hard work; behind every question, there is always its unknown secret.
When you are bored, it can be used as a friend to relieve boredom. If you are angry, you can use it as a tool to vent. Each number has its own beauty. "1" has a straight beauty, "3" has a curvy novelty; "5" is a fat man with a bulging belly. "7" is another thin child; "8" is an hourglass, and "9" is a spoon for drinking soup. Every number is an art full of charm. Geometry, a kind of beauty of curves. Points form lines , lines constitute surfaces, and surfaces constitute bodies. Dots are like ink drops on white paper; lines have the beauty of curves and extensions; surfaces are beautiful patterns, and bodies are interesting works of art.
Today, the weather is sunny, and my dad and I are in a beautiful mood. My dad invited me to play a coin-getting game. There were 20 coins on the table, and the two of them took turns to get at least 1 and at most 4. The one who gets the last coin loses.
We started playing the game. My dad and I each took the coins happily, but no matter whether I took it first or my dad took it first, I always got it. The last coin. I was confused and asked my dad what was going on. Dad smiled and told me that all the coins were subtracted from the last coin, which is 20-1=19 (pieces), and then divided by 1. The minimum sum of 4 is 5, which is 19÷5=3 and 4. Just remove the remaining 4, and no matter how many the opponent takes, you will definitely win if you take the sum of 5.
I tried it with a skeptical attitude, and the final result was indeed the same. It turns out that there is such a big secret hidden in the game!
The coin game is not only useful! It made me fall in love with mathematics and understand many mysteries of mathematics. I will work hard to discover more interesting mathematics games in the future! Mathematics Weekly Diary Chapter 4
Wednesday, October 15th The sky is sunny
Time flies like an arrow, and the sun and the moon fly by. The happy ninth week is quietly leaving us. What awaits us is the difficult midterm exam. In the classroom, there is no such thing as the past. On the playground, there was not as much laughter as in the past. Students take the time to review and strive to get good grades.
This week, the teacher imparted new knowledge to the students: what is a parallelogram, what is an isosceles trapezoid... Through learning, we increase our knowledge. Teachers are like gardeners, working hard and watering our seedlings with knowledge to grow.
The midterm exam is coming soon, I must work hard to get good grades and repay you!