This is the 1515th most frequent Russian word.
площадках
"Площадках" means "platforms" or "sites" in English.
In this sentence, 'площадках' refers to specific areas designated for sports activities, denoting locations.
Мы играли на разных спортивных площадках.
We played on various sports grounds.
In this context, 'площадках' stands for designated locations within the city where the exhibition is going to be held.
Выставка будет проходить на площадках города.
The exhibition will take place at the venues across the city.
Here, 'площадках' is used in a metaphorical sense to refer to forums or venues for scientific discussion.