Websites for primary age children
Arcademics - Games for English and maths. USA English
BBC Bitesize Primary - Games and learning for all school subjects
Cambridge English - Learning activities and songs
Find Pairs matching games - Word games
Games to Learn English - Simple games to practise English
Highlights Kids - Games, activities and jokes. US English
Learn English Kids (British Council) - Games and activities for learning English
Many Things - Simple quizzes for learning vocabulary
ABCYa - Games for maths and English. USA English. Free to play on a desktop computer but you have to register.
Starfall - Games and activities for reading. US English. Websites with Online Books
BBC Learning English - children's stories - Story videos for children to watch with their parents.
Story Books UK - Online story books to listen and read. Also has stories in Farsi (Persian).
Unite for Literacy - Online story books to listen and read in English (US) and Farsi.
World Stories - Story books to read in English and Pashto.
For secondary age children
English File - Grammar and vocabulary activities.
BBC Bitesize Secondary - Help with all secondary subjects.
Websites for adults
English My Way - Videos and activities for learning beginner English.
Apps for children
Learn to Read [Apple] - Duolingo ABC
Learn to Read [Google Play] - Duolingo ABC
Khan Academy Kids [Google Play]
Apps for older children (and adults)
Learn English Podcast [Apple] - British Council
Johnny Grammar Word Challenge [Google Play] - British Council