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Features
- Size: 22.5 x 6.5 x 1.5 cm
- Reset system
- Aluminum frame
What is the Soroban?
The soroban is a counting frame with rods or beads used for arithmetic operations. It was invented as the Japanese abacus known as the Soroban. The soroban is a tool for addition, subtraction, multiplication, and division.
The soroban is used in Japan to practice arithmetic exercises at school. All Japanese students learn how to use the soroban. It is an important instrument for primary education. The string version of the soroban is also popular in elementary schools.
Although the term "soroban" is used in Japan, some Japanese textbooks refer to it as suanpan or suan pan.
The soroban offers many advantages:
1. The soroban can be used by people of all ages and abilities to master arithmetic operations of addition, subtraction, multiplication, and division.
2. It encourages children to work independently and contributes to the development of autonomy and understanding of mathematics.
3. The soroban helps students build a solid foundation for further math studies by teaching concepts such as place value, which are fundamental for advanced math topics like algebra, and more.
4. It provides an interactive method suitable for both individual and group teaching contexts.
5. It enables basic arithmetic operations to be performed without paper or pencil.
Soroban Design
The soroban consists of a rectangular frame divided into two parts: the upper section and the lower section. The lower section has four beads on each rod. Each rod of the soroban has four beads in the lower section called unit beads and one bead in the upper section that counts as five units.
The use is similar to the suanpan; you can count up to 9 by adding the units on each rod from left to right.
Using the Soroban
The soroban can be used to add, subtract, multiply, and divide numbers. Beads in the upper section are pressed on the rods while performing calculations using standard algorithms (which can be memorized). It is also possible to perform more complex calculations with the right technique.
History and Name of the Soroban
Invented in the 16th century, the soroban replaced the counting board known as the suanpan, used in China since at least 400 AD. The name "soroban" comes from its resemblance to a traditional Japanese desk made of a thin wooden board called a "soroban." The soroban is used for calculations in Japan, China, Korea, and Taiwan. A similar device with beads on rods was known as the Suan Pan in ancient China.
