Past simple:
https://www.curso-ingles.com/aprender/cursos/nivel-intermedio/verb-tenses-past/past-simple
game:
https://www.eslgamesplus.com/irregular-past-tense-esl-grammar-jeopardy-quiz-game/
https://learnenglishteens.britishcouncil.org/grammar/beginner-grammar/past-simple-regular-verbs
Past simple vs past continuous:
https://www.ego4u.com/en/cram-up/grammar/simpas-paspro
http://www.eslgamesworld.com/members/games/grammar/perfectpast/past%20progressive%20vs.%20past%20simple%20betting.html
reading exercises:
http://www.really-learn-english.com/english-grammar-tenses.html#Simple_Past
