About this title: Processing Instruction (PI) is an approach to grammar instruction for second language learning. It derives its name from the fact that the instruction (both the explicit explanation as well as the practices) attempt to influence, alter, and/or improve the way learners process input. PI contrasts with traditional grammar instruction in many ways, principally in its focus on the learner's input rather than their output.
Note: This is a general synopsis. Each listing is described below.