The author looks to be Japanese, so that's probably why. In Japan, grade school teachers often use the symbols like so: ○ = correct × = incorrect △ = partially incorrect I'd prefer the yes, no, partial though as well.
The author looks to be Japanese, so that's probably why. In Japan, grade school teachers often use the symbols like so: ○ = correct × = incorrect △ = partially incorrect I'd prefer the yes, no, partial though as well.