Just get up from here and go sit next to him (while pointing at the person).
Is the use of "from here" natural? A teacher says this to a kid.
Just get up from here and go sit next to him (while pointing at the person).
Is the use of "from here" natural? A teacher says this to a kid.
It is more redundant than unnatural. If one person says to another "get up from here" then it logically follows they are both in the same place, so why specify where to get up from?
It is not grammatically incorrect, as you could comfortably say:
It takes 30 minutes to get from here to there.
I feel it stands out as unnatural in your sentence for the reason given.
Here and there is complicated. It would be used as explained below.
1) Just get up from here and go sit next to him (while pointing at the person).
The teacher would have to be standing next to you to say that.
2) Just get up from there and go sit next to him (while pointing at the person).
The teacher would be at the front of the class, not next to you.
The use of here and there can make or break what people say in terms of being idiomatic.
Here vs There is a matter of proximity.
While the teacher is close to the child as an arm long distance:
Just get up from here and go sit next to him (while pointing at the person).
While the teacher is far from the child in a distance to be able to point but not able to touch:
Just get up from there and go sit next to him (while pointing at the person).
So it is natural if teacher is close to the child. It is un-natural if child was far away from the teacher.