I read a book called "Help You Learn Math", which is a good book. It aroused our interest in mathematics learning in the form of stories. For example, can you eat fruit? In this story, the German philosopher Hegel said, "You can eat cherries and plums, but you can't eat fruits." You must say, what does this mean? Aren't cherries and plums fruits? In fact, both cherries and plums are fruits. Fruit is a big collection, and cherries and plums are subsets of this big collection. There is nothing wrong with saying that cherries and plums are fruits. However, the word "yes" here means "contained in" rather than "equal to".

There is nothing wrong with eating fruit, because it is just eating some kind of fruit. In mathematical terms, it is to eat an element, or some elements, in a fruit collection. But daily speaking can't be as strict as math, as long as everyone understands it.

I learned a lot about large sets and subsets from this story.

Where's your face? "Very interesting. My aunt asked her 6-year-old nephew, "Do you know where your face is? "The little boy pointed to his nose, and menstruation said it was wrong; So he moved his finger, but menstruation said, "That's called cheek, not face." Then he pointed to his mouth, eyes, forehead and chin ... but my aunt was still wrong. Embarrassed and strange, the boy finally thought of taking offense as defense and asked menstruation, "What about your face? Menstruation smiled and replied, "Put my nose, cheeks, mouth, eyes, forehead and chin together, and that's my face." In the next article "Let's Consider Together", the author said: "In mathematics, when we consider something together, we say that they form a' set'! "

Please read this book if you are free. I hope you will gain a lot after reading it, stimulate your enthusiasm and interest in learning mathematics, feel the beauty of learning mathematics from it, and further improve your knowledge and interest in reading.