Beginner/Elementary Level

General Practice

http://learnenglishkids.britishcouncil.org/en/

Elementary Grammar, Vocabulary and Pronunciation

https://elt.oup.com/student/englishfile/elementary3/?cc=gb&selLanguage=en

Grammar and Vocabulary

http://www.eslgold.com/vocabulary/low_beginning.html

Grammar Games for Elementary and Beginner

http://www.eslgamesworld.com/GrammarGames.html

Quizzes, Topic Based Vocabulary Exercises and Various Worksheets

http://www.esolcourses.com/topics/autumn-festivals.html

Crosswords, Spot the Difference, Various Vocabulary Based Exercises

http://bogglesworldesl.com/spotthedifferences.htm

Vocabulary Quiz 

http://www.englishmedialab.com/Quizzes/elementary/odd%20one%20out%20beginner%20revision.htm

Dictation (Easy)

http://www.englishmedialab.com/Quizzes/elementary/odd%20one%20out%20beginner%20revision.htm

Matching Games (Vocabulary and Listening)

http://eslgamesworld.com/members/games/vocabulary/memoryaudio/hobbies/index.html

Listening Exercises
http://www.esl-lab.com/