Abacus
I had been learning an abacus when I was a primary schoolgirl. I really liked it and my skill of calculation went higher and higher. However, when I was in 6 grade in primary school, my teacher died. Not only me but also my mother and my grandmother was leaning an abacus from the same teacher. So he was very old.
I wanted my children to learn an abacus from him. It can't be real, but I will take my children to any abacus classes. Because it improves their skills of calculation.

