Egypt is an ancient country of mathematics, and it is considered as one of the earliest countries where mathematics came into being. Therefore, when studying the history of mathematics, Egyptian mathematics must be mentioned.
Social background of Egyptian mathematics.
Egypt lies on the Nile. In ancient times, it was divided into two kingdoms, and the long and narrow valley sandwiched between two plateaus was called.
In order to become Upper Egypt, the Nile Delta is called Lower Egypt. After a long struggle, the two kingdoms were unified in 3200 BC, and the capital was established in Memphis downstream.
The Nile often overflows and inundates fertile fields, and the rulers need to requisition and re-measure the land. In fact,
Egyptian geometry originated from this. Greek historian Herodotus (about 484 BC? 424) In the book History, it is clearly pointed out:? Soteras Seostris) (1) Distribute the land of Egypt to all Egyptians and residents. He distributed square land of the same size to everyone and asked the landowner to pay him rent every year as his main tax. If the river overflows, the king will send someone to adjust the area of lost land. In this way, his rent will be collected according to the reduced land area. I think it is because of this practice that Egypt has had its first time.
Mathematics learning method
Don't be afraid, study hard.
We say that we should have a good attitude in everything we do. Give a simple example, such as some application problems, although it seems that there are many descriptions in words, there are few actual data in actual analysis, and then list the equations by establishing a mathematical model, and then get the answers. When you finish, you will feel that the most difficult problem in mathematics is just that, and suddenly your pride arises. At this time, your resistance to mathematics will dissipate and disappear.
Math, homework should be done in order.
Pay attention to the order of reading and doing homework. To develop a good study method, try to review what you learned that day, especially the notes you took, and then do your homework, which will be more effective.
Pay attention to the examples in the textbook.
We must form the habit of paying attention to analyzing and memorizing typical examples in textbooks in our usual study, so that we can be prepared.
In the face of the college entrance examination and the senior high school entrance examination, we should usually check for leaks and fill vacancies.
For the usual tests and exams, don't focus on the results, you must find your own omissions. The function of the exam is to check the loopholes in your usual study. Some students pay too much attention to their grades and are afraid of losing face in front of their friends. If so, I advise you to lose face more. Wrong questions are your valuable experience. It's not terrible to be wrong once. Doing well next time is progress.
Prepare the wrong book and accumulate valuable experience.
When learning mathematics, wrong questions are inevitable. I hope everyone will prepare a book and write all the wrong questions in it, especially the knowledge points, their own ideas and correct answers. Why can't they think in the right direction? Over time, this is your precious wealth.
Classified memory method.
According to the nature, characteristics and internal relations of memory materials, they are classified. For example, after learning the unit of measurement, everything you have learned can be summarized into five categories: length units; Area unit; Volume and unit of volume; Weight unit; Time unit. This classification can easily systematize, organize and memorize complex things.
Memories of songs.
Compile the mathematical knowledge to be memorized into songs, formulas or jingles for easy memorization. For example, to measure the angle, you can compose several songs: put the protractor on the angle, align the center with the vertex, point the zero line to one side, and look at the degree on the other side. ? For another example, the movement of the decimal point causes the size of the number to change. Decimal point, please follow me. You have to find the right place to go, okay? Left? And then what? Right? ; The horizontal belt is a you, it expands to you; Add a left horizontally and narrow it to the left; Ten times, one step, a hundred times, two steps, not enough digits to find? 0? Hook. ? Memorizing in this way can not only make the knowledge points catchy, but also make the memory firm.
Conventional memory method.
According to the internal relations of things, find out the regular things to remember. For example, memory length unit, area unit, unit of volume transformation method and aggregation method. Chemical method and aggregation method are opposite to each other, that is, higher unit value? Propulsion rate = low-level unit value, low-level unit value? Advanced rate = value of advanced unit. Mastering these two laws will solve the problem of chemical polymerization. Regular memory requires students to process and sort out the relevant materials they have learned with their brains, so the memory is firm.
List memory method.
It is to list some confusing memory materials into tables to achieve the purpose of memory. This method is obvious, intuitive and comparative. For example, if you want to remember the differences between prime number, prime factor and prime number, you can make a table to help you remember.
Key memorization method.
With the growth of grade, more and more mathematical knowledge is learned, so it is a waste of time and the memory effect is not good for students to remember comprehensively. So learn to remember the key points. On the basis of remembering the key contents, we can remember other contents by deduction, association and other methods.
For example, learn the common quantitative relationship: work efficiency? Working hours = workload. Workload? Work efficiency = working hours; Workload+working hours = working efficiency. As long as you remember the first quantitative relationship, you can deduce the last two quantitative relationships from the multiplication and division relationship. This memory method reduces the memory burden and improves the memory efficiency.