Duolingo (always free, learn any language!)
The French Experiment – free online French lessons and children’s stories
Lalilo – available in French & English, for reading comprehension. Offering free memberships during school closures (as of March 26, 2020).
Mini TFO – Games and Videos in French
Logiciel Educatif – educational games in French
Taka T’amuser – educational games in French
Coucou (Télé Quebec) – Games, videos, songs and more in French