Gagné's model of instruction outlines nine events of instruction that correspond to different types of learning outcomes. These include gaining attention, informing learners of objectives, stimulating recall of prior learning, presenting stimuli, providing learning guidance, eliciting performance, providing feedback, assessing performance, and enhancing retention and transfer. Rapid prototyping is an instructional design approach where early versions or prototypes of instruction are created to identify design flaws and gain feedback before full development, allowing flexibility. Both models aim to improve their respective processes through a structured approach and iterative feedback.