It's our eldest daughter's school project at the Holy Redeemer of Cabuyao last school year 2015-2016 when she was at her grade 8 level.
It's easy to make, but we had difficulty of finding the right beads with the right holes that will fit the thin irons which hold them together line-by-line.
She became expert of using this instrument. She can add, multiply, subtract and divide using this home-made abacus.
She's so lucky to have learned it from her school. During our time, we only heard the name Abacus from our teacher, but never saw it, even in a picture.
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