We will discuss base systems in more detail in another post. The reason for the difference in the number of beads is the Soroban uses a “base 10” numbering system while the Suanpan uses a “base 16” numbering system. The Japanese Soroban has 5 beads per rod while the Chinese Suanpan has 7 beads per rod. The difference between the types of abaci are the number the beads per rod. We recommend and throughout the online math program we will only use the Japanese version of the abacus called a Soroban or counting tray. It is possible to use other forms of the abacus such as the Chinese Suanpan by using only 1 bead on top and 4 beads on the bottom. Therefore we expect most of our students will utilize both physical and digital versions of the abacus.īefore we obtain our first abacus we must know what type of abacus to purchase. We recognize the convenience of using a digital abacus. There are many PC, tablet, and smartphone abacus applications available, many for free. Although we are strongly recommending the use of a physical abacus by no means are we saying don’t use digital versions. This visualization technique will be instrumental in all mental calculations. The sense of touch or feel is important to help speed the student’s mental visualization of the abacus. The reason for suggesting the use of a physical abacus is the user’s sense of touch will be much stronger on a physical abacus than using a digital one like on a tablet or smartphone. We highly recommend in the beginning of a student’s abacus training that they use a “physical” abacus and not a “digital” abacus. To get started with the online math program, we need an abacus or preferably a Japanese Soroban which can be purchased at anytime on.
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