SIMPLE PAST TENSE

https://sites.google.com/site/easygrammar4kids/simple-past/simple-past

http://www.eslgamesplus.com/past-tenses/

http://www.eslgamesplus.com/irregular-past-tense-esl-grammar-jeopardy-quiz-game/

http://learnenglishkids.britishcouncil.org/en/grammar-practice/past-simple-endings

AFFIRMATIVE

http://www.agendaweb.org/verbs/past_simple-exercises.html

http://www.agendaweb.org/verbs/past_simple-exercises-elementary.html

NEGATIVE

http://www.agendaweb.org/verbs/past-simple-negative.html

INTERROGATIVE

http://www.agendaweb.org/verbs/past-simple-questions.html