This is the 10204th most frequent Turkish word.
becerisini
"His/her skill" or "ability."
Here, "becerisini" relates to the artist's skill in painting, emphasizing the quality and proficiency.
Sanatçının resim becerisini hayranlıkla izledik.
We admired the artist's painting skills.
In this sentence, "becerisini" refers to a specific skill, "mathematical skill," owned by the subject.
O, matematik becerisini geliştirmek için çok çalışıyor.
He is working hard to improve his mathematical skills.
In this context, "becerisini" indicates improving a personal ability or capability, specifically related to language learning.