PPP (or 3Ps) refered to Presentation, Practice and Production, is a kind of instructional sequence, or a model of lesson plan.
Presentation here refers to the introduction to a new subject or lesson. The teacher begins the lesson by setting up a situation, either eliciting or modeling some language that the situation calls for.
Practice stage: Students practise the new language in a controlled way. They drill sentences or dialogues by repeating after the teacher or the tape, in chorus and individually, until they can say them correctly.
The end point of the PPP cycle is production, which some trainers have called ‘immediate creativity’. Here the students are asked to use the new language (in this case the present continuous) in sentences of their own. It can be a role play, a simulation activity or a communication task.