This is the 4280th most frequent Russian word.
активизировать
"To activate" or "to intensify."
In this sentence, 'активизировать' is used to mean increasing or enhancing efforts towards a goal.
Мы решили активизировать наши усилия по завершению проекта.
We decided to activate our efforts to finish the project.
Here, 'активизировать' indicates initiating or intensifying the activity of marketing campaigns.
Компания планирует активизировать свои маркетинговые кампании.
The company plans to activate its marketing campaigns.
In this usage, 'активизировать' describes stimulating greater participation or interest from students.