Abacus+-+Robert+leal

= The Abacus  =

The abacus, otherwise known as the counting frame, has been used all throughout the world and has changed greatly over time but the concept is still the same. Many countries all over the world have adopted the abacus to perform arithmetic equations such as adding, subtracting, multiplying, and dividing. It was invented in 3000 B.C. in China and is still widely used today by merchants and clerks in Asia, Africa, and many other places. The abacus has been an important part in the foundation of many civilizations because it was the tool used to count and perform math before the adoption of the written numeral system. It has been used by the Mesopotamians, Egyptians, Persians, Greeks, Romans, Chinese, Indians, Japanese, Koreans, Russians, and the Native Americans.