My grandson introduced me to the Japanese Abacus or Soroban in 2015 and I was completely blown away. Here’s how it works and what it does for your, or your child’s, brain. The abacus in its original form appears (Wikipedia) to date from as far back as 2700 – 2300 BC. It has gone through various stages and remains in Russia in the form that most of us are familiar with where there are 10 beads per rail for decimal counting (all images copied from Google) – This developed into the Chinese abacus which has a 5 and a…
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