This is the 5892nd most frequent Russian word.
результативных
"Effective" or "productive."
Here, 'результативных' modifies 'игр' ('games'), describing them as productive and yielding good results.
Команда показала несколько результативных игр в прошлом году.
The team demonstrated several effective games last year.
In this case, 'результативных' describes 'учеников' ('students') who showed notable results.
Учитель отметил результативных учеников за их достижения.
The teacher highlighted the successful students for their achievements.
Here, 'результативных' refers to 'методики' ('methodologies'), emphasizing their effectiveness.