A DISCLAIMER:
I do two things differently.
First,
I do not teach past tense and future tense separately, one after the other, as it is often done in Ulpanim. The tenses are related to each other and the system is seen better if we see the two sides of the picture at the same time.
Second,
I group verbs differently. I have a system which, I believe, is easier for learners than the classic binyan system, which is built around the past tense he-form – absolutely not the form you, as a learner, learn first. For us – it's enough to know the infinitive and the present tense to see where the verb belongs to.