From the first day of school, I began to learn mathematics, stepped onto the three-foot platform and taught mathematics. Everything is natural. I only know that mathematics is closely related to our life. Speaking of the close relationship between mathematics and life, I think many people will think of shopping. However, everyone knows that mathematics is widely used, but not everyone can explain it clearly, even math teachers.
"If Mathematics Disappears: A Mathematical Story in a Strange Town" tells the story of an absurd ban aimed at eliminating mathematics+a teenager who is crazy about mathematics = an eye-opening and amazing mathematical miracle. When Jeremy's small town school announced that it would never take math class again, the children cheered and even
I have read this book to my son every night for a week. After reading this, my math teacher is also an eye-opener. From the book, I really feel the ubiquitous mathematics in my life.
Give a few examples.
Do you know why the frame of a bicycle is triangular? Does the tripod size of ordinary bicycles, tricycles and extreme BMX have any influence?
Figure 1 ordinary bicycle
Figure 2 Mountain bike
Figure 3 Extreme BMX
Cycling is related to geometry (the branch of mathematics that studies the shape, size and position of objects and their relationships). Almost all bicycle frames are triangular. The strongest part of a bicycle is this tripod, because it has stability. Different tripod structures designed by designers for different needs. Mountain bike (Figure 2) Because the bicycle rides on the gravel road, the rider must keep a low center of gravity to prevent falling, which is why the triangular structure of the three-way bicycle is lower and wider. Extreme BMX (Figure 3) It can "fly". The triangle at the back is made wider, so that the rider can lie lower, the seat is very low, and the distance from the ground is very close, making it easier for the rider to complete jumping, rotating and other actions. You can drive the car directly when you encounter obstacles. If you want to speed up, step on the gas pedal hard. The ordinary bicycle (Figure 1) is designed for long-distance smooth running, so its tripod is relatively high and narrow, and the higher tripod can make the rider feel more comfortable.
Do you know the math of pitching?
The process of playing basketball is also full of mathematical magic. You can score more goals by adjusting the pitching angle slightly. Objects thrown into the air will always rise and fall along the trajectory of parabola. When throwing the ball, the ball will rise, but after a while, it will start to fall under the influence of gravity. It can be said that how far the ball can go depends on the angle of pitching at the beginning. If the pitch of the ball is too low, gravity will make the ball land early before it reaches the distance. If the pitch is too high, the ball will be thrown very high, but not very far. If you want to pitch accurately, you must pitch at a 45-degree angle.
This is very useful in skateboarding, American football, javelin throwing and discus throwing.
What is the relationship between graphic design and mathematics?
Tetris, football surface, sports sole and floor tiles at home are densely paved. What is dense mode?
With one or more plane graphics of the same shape and size, they are spliced and paved without any gaps and overlaps. This is the dense paving of plane graphics, also called the mosaic of plane graphics. In fact, the roads on both sides of the street are often paved with bricks with geometric patterns. The shape of floor tiles is usually square and rectangular. We have also seen regular hexagonal floor tiles. Whether it is a square, rectangular or hexagonal floor tile, the middle of a floor can be paved without gaps or overlaps. This is called dense paving. Knowing the meaning of dense shop, can you still find dense shop graphics in your life? Yes, the peaks and nests are also dense patterns. Of course, you can also create many dense graphics yourself.
Dense graphics in life
How is music recorded digitally?
In MIDI keyboard, as long as the keyboard is pressed, music instructions are converted into digital codes. One number represents the scale played, another number represents the volume and duration, and another number represents the sound of the instrument you want to choose, so the record is not music, but numbers. When we play the recording, these numbers are converted into sound.
How do bees use mathematics to "tell" the secret source of their companions?
It turns out that bees can express their flying distance by "dancing eight characters" Look at the middle part of the number 8 and know how far the bees fly back. The longer the bees sway in the middle, the farther the honey source is. When bees swing in the middle, they form a certain angle with the sun as the reference, which can indicate the direction of honey source. The swing second indicates that the distance between the nest and the honey source is 1 km.
Another example is that the snail shell is related to the golden section; Sunflowers also contain infinite mathematics. Even some simple tricks are inseparable from mathematics.
All right, no more examples. The following common examples in life also contain mathematical knowledge. If you are interested, go and see "If Mathematics Disappears" written by Gabriella Lee and Gabriella Gilian O 'Reilly-a mathematical story that takes place in a strange town.
See for yourself. You will find that mathematics is so interesting; Mathematics is indeed a subject that we must learn.