The content displayed in this class is rich and colorful, and the students show their magical powers. There are poetry recitation, sketch performance, ppt demonstration of simulated teachers, cross talk and even magic performance. You can't imagine the boring and monotonous mathematics, which is so dazzling under the processing of classmates. The students are very enthusiastic and great. The performance of the students made everyone laugh for a while and sat up and meditated for a while. In the sketch "Onion Buyers and Onion Sellers", how did the boss only use 50 yuan to buy onions with a cost of 100 yuan? Why did Hu Yiting just put a piece of paper on the glass and turn it upside down, but the water didn't leak a drop? The students are confused.
As Li said: "Mathematics, symbols and graphics, these lovely elves, have their wonderful performances in every corner of life, which makes people linger." Mathematics is not boring, it will give you a road to truth, mathematics comes from life, mathematics serves life! This is the significance of this course in Class 7, Grade 4.
China New Year is coming. My mother bought all kinds of drinks from the supermarket, including my favorite milk, coke, sprite and so on. I am puzzled: the milk box is a cuboid, while the coke bottle is a cylinder? I looked up some information. Finally understand: Coke is a carbonated beverage, which will produce a lot of gas and there is pressure inside the container. A circle is the shape with the largest enclosed area under the same circumference, so for a cylinder, the relative volume is the largest and it is the most stable shape under the action of internal air pressure. The most stable state should be a sphere, but the spherical packaging is expensive to manufacture and difficult to display, so the cylinder is chosen.
Except milk. Milk is a product with high consumption, which is consumed quite quickly from production to drinking. The use cost of cartons is low, and it can also remind people of the selling points of "nature" and "health". I think there are two reasons for making a square box. 1 paper products can be easily folded into square boxes with simple workmanship; Generally, baskets and trucks used for freight transportation are rectangular, but putting a rectangle in the rectangle can easily occupy the largest area, so it is convenient for transportation and display.
I see, I suddenly realize that life can't be separated from mathematics, and mathematics serves life.
Mathematics composition 300 words 3 mathematics, if interpreted from a scientific point of view, mathematics is a subject that studies concepts such as quantity, structure, change and spatial model, which is produced by counting, calculating, measuring and observing the shape and movement of objects by using abstract and logical reasoning.
Mathematics, the expression of human thinking, embodies people's enterprising will, meticulous logical reasoning and the pursuit of perfection. Mathematics is magical, it exists anywhere around us, and we all use it unconsciously.
There are different opinions about what mathematics is in history. Some people say that mathematics is relevance, while others say that mathematics is logic. Finally, Engels, the great tutor, stood at the theoretical height of dialectical materialism and made a series of scientific conclusions brilliantly by deeply analyzing the origin and essence of mathematics. He pointed out: "Mathematics is a quantitative science, and the object of pure mathematics is the spatial form and quantitative relationship in the real world." According to Engels' point of view, it is more accurate to say that mathematics is a science that studies the quantitative relationship and space in the real world.
Mathematics is so wonderful, it promotes human progress, further sublimates human culture and brings us into an unusual new era. Why can't I learn well? Therefore, from now on, I will study mathematics well, motivate myself to become a mathematician, explore the unknown mathematics hidden in the depths of mankind, and let mankind embark on a new era.