Grammar-Quizzes.com is an open educational resource for understanding, learning and practicing English grammar through the use of current event stories, pictures, contrastive grammar points, sentence diagrams, and self-quizzes.
The VocabularySpellingCity app has word games, vocabulary games, and spelling games from the popular SpellingCity website. This is a great free app for lower levels to develop their spelling and vocabulary. Lots of audio support and interactive games.
Fairy tales and fables, traditions and reality through imagination. Fairy tales and fables allows to face a wide variety of topics using the stuff that dreams dreams ara made of: desires and emotions, without barriers.