Chinese number system

The Chinese number system, also known as the rod system, consists of these symbols for the numbers 1 to 9. As the image shows, each symbol has a horizontal representation (hengs) and a vertical representation (tsungs). This is because depending on the position of the symbol in the number they were written horizontally or vertically.Sigue leyendo “Chinese number system”

Project Problem Solving – 3ºESO

With this project we will improve our skill in problem solving in different contexts. Activity 1: Math Prehistory Solve problems 1 to 5 and hand in the sheet. (Answers must be in Spanish and English) Los primeros humanos utilizaban los números para contar cosas cotianas como los animales que tenían o el paso del tiempo.Sigue leyendo “Project Problem Solving – 3ºESO”

Babylonian number system

The Babylonian civilization was located in what is now Iraq. They were great mathematicians and astronomers. This numbering system appeared around 1800 BC. It is a positional number system, that is, the value of a symbol depends on its position in the number. It is a base sixty system, that is, they had symbols forSigue leyendo “Babylonian number system”

Roman number system

The Roman numeral system is still used today, when writing a century, on monuments, in the names of kings and popes. This system, based on the Etruscan numbering system, was developed in Ancient Rome. It is made up of capital letters that have different values ​​and is additive, that is, to know what number itSigue leyendo “Roman number system”

Egyptian number system

It is thought that the Egyptians introduced the base 10 numeration system at least as early as 2700 BCE (and probably much earlier). The number system was called hieroglyphics. This system made possible to carry out a record of the number of men available for work or military campaigns, to keep control of the grainsSigue leyendo “Egyptian number system”

Al Khwarizmi (English)

In the year 622 the Muslim Empire resurfaces again with the appearance of Muhammed. As they conquered new empires, they assimilated their knowledge. The center of Muslim civilization moved to Baghdad where in the 9th century the Caliph Al-Mamun founded the so-called “House of Wisdom”. It was a complex successor to the Library of Alexandria.Sigue leyendo “Al Khwarizmi (English)”

Real Numbers

The beginnings. Complete the text with the following words Rational numbers Powers and roots Real numbers There are different kinds of numbers; first you have studied whole numbers and integers, with them you can add, multiply and subtract. After that you studied rational numbers, and division became possible. But there are other operations that cannotSigue leyendo “Real Numbers”

Share as an Egyptian – Fractions

The Egyptians were great mathematicians. They solved all kinds of problems using calculations such as marking the boundaries of the land when the Nile overflowed, the construction of pyramids, trade, distribution, etc. They knew the natural numbers and they used fractions with numerator 1, the unit fractions. An Egyptian fraction is a unit fraction andSigue leyendo “Share as an Egyptian – Fractions”

Women in mathematics

On March 8th we celebrate the International Day of Women. Read the texts to know more about some incredible women Hypatia (370-415 AD) Hypatia was the daughter of prominent Egyptian Mathematician Theon with whom she collaborated on several famous mathematical works. Since she was the daughter of an upper-class mathematician and philosopher, she received theSigue leyendo “Women in mathematics”

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