The resources below are ones I made to teach the present tense from scratch. I then thought to myself that I should teach the preterite, future, conditional tenses etc. at the same time! I will come back to the preterite + the future etc., but I thought that it would be good for the students to see how the same processes apply when creating different tenses, i.e. infinitive + remove ending (or not) + add tenses endings to the stem of the verb. The students, although top set so quite able, got the idea and a final task was to write a paragraph about a bizarre person + what they did, do + will do. They seemed to enjoy this bit + this allowed them to practise all the rules covered governing tense formation in a more creative fashion. The resources below speak for themselves!