This is the 15305th most frequent Russian word.
постепенным
Gradual.
In this sentence, the word 'постепенным' (gradual) is used as an adjective to describe the process of learning, emphasizing the importance of progress occurring in small, incremental steps.
Процесс обучения должен быть постепенным.
The learning process should be gradual.
Here, 'постепенным' (gradual) again functions as an adjective, emphasizing the steady and step-by-step nature of skill improvement that results in success.
Его успехи обусловлены постепенным ростом навыков.
His successes are due to a gradual improvement in skills.
In this sentence, 'постепенным' is used to describe the way changes in nature occur, highlighting their slow and consistent progression.