This is the 3342nd most frequent French word.
éducatives
"Éducatives" means "educational."
Here, 'éducatives' modifies 'activités' and describes their purpose of education.
Les activités éducatives sont essentielles pour le développement des élèves.
Educational activities are essential for students' development.
In this sentence, 'éducatives' characterizes 'ressources' indicating their role in teaching or learning.
Il existe des ressources éducatives en ligne très utiles.
There are very useful educational resources online.
The word 'éducatifs', a masculine parallel to 'éducatives', modifies 'jeux' to define their educational aspect.