In Japan, maybe or other countries too, students are suppose to be educated mostly in five subject.
Japanese , math, English, science, history.

But the best subject in that five sub is what?

I definatily can say It' math.

Math 's absolute and concrite subject.
We learn number in math class.

everything is made by math.
architechture, road, boat, everything.
Honestly my vocabulary to English's now platueu.

So I'm really sick of that my state.

I fighure out how I go out recent situation.

And I know it's a just hanging there and make effort.

So which means grid is the best way.