I want to bring you a very interesting book-interesting mathematical magic. He used interesting stories and magic to show us how magical mathematics is, so that we can learn mathematics with interest and never get tired of it. This book makes people admire the profoundness of mathematics.
In the first chapter of this book, one day, the author went to a big theater to see magic. As soon as he walked in, he saw a boy of 13 years old appear on the stage. His assistant quickly slipped into the audience, picked up the audience's belongings and asked the little boy on the stage. As a result, the little boy answered correctly without hesitation in a far and dark environment, and the audience heard stormy applause and warm cheers.
The author is very surprised that all these mysteries come from simple "numbers".
The magician hints at an object with numbers to achieve the effect of "magic". For example, "1" stands for handbag; "2" stands for smoke; "3" stands for copper coins and so on.
The book also says that "extraordinary memory" also numbers words by numbers. There is also a magic trick: let a partner take a domino, such as 6/3, let him multiply one number in this group by 2, add 7, then multiply it by 5, then let him add another number and let him report the answer.
Mathematical journey to the west book review ii
These days, I read The Journey to the West, a math book written by Li Yupei. This book is very interesting. Please join me in the wonderful mathematics paradise! Math monkey is a little macaque. It's smart and likes math. Because of the long-term study of mathematics, the level of mathematics is not low, and everything must be solved by mathematics. People nicknamed it "Mathematical Monkey".
Once, Pig Bajie was surrounded by four goblins: spider spirit, fox spirit, rat spirit and snake spirit. Spider spirit said, "Big-eared monk, where are you going!" Pig was surprised: "Ah, four goblins!" "They formed a phalanx, the pig eight quit around the central. "Kill Pig Bajie and eat braised pork," said the snake spirit.
Pig was furious and went to beat them. See spider essence say only: "Change array, change." The pig fainted and had to be defeated, so he went to the math monkey for help. Hearing this, the math monkey said, "You can fight wherever I tell you to. Pig Bajie fought with witches again, and the math monkey climbed up the tree and said, "Fight. "
Pig Pig said, "Look at the rake." Spider spirit said, "I'm finished." Pig Bajie killed Spider Spirit.
The other banshees dispersed in a hubbub when they saw the leader dead. "Run!" Pig Bajie said to the little monkey brother; "You are really good, better than my monkey brother!" Pig gave a thumbs-up and said, "Little monkey, what a wonderful way!" " Mathematical monkey figured out the method of changing the witch matrix through mathematics. Mathematics is not boring, not difficult, it is so magical, so wonderful!