I expect to finish my BSc in Mathematics this year so I am going through the process of applying to Master Programmes. Apparently, if you want to study as an international student a letter of recommendation is a key component to the application, however I am a bit lost in this.
I was thinking of asking one of my lecturers from last year, the problem is that last year I was a Visiting Student in other institution, so I do not know how usual is to get a letter of recommendation as an undergraduate from a institution different from the one you are graduating with.
Why don't ask someone from my home institution? I met most of my lecturers know this year so they could only evaluate me on a semester that will not have finished for the moment of writing this letter of recommendation, also in my previous year of my undergrad I did not show much interest or motivation, so I do not think they can evaluate me fully, plus it was three years ago.
Why do I think a person from another institution is more appropiate? Most importantly because it was last year and for a full academic year, also I was highly active in their courses (got First Class in both of them) and in one of this courses, despite not having some of the prerequisites, I managed to do it properly by independent learning. Why do I have some doubts? Because it was fully online so I do not know if they even remembers me, plus I have not talked/written them since last semester ended so I feel that starting communication again, after almost 6 months, with this request could be viewed as opportunistic.
Thanks for your attention.