This document discusses prior knowledge and its role in learning. It defines prior knowledge as a learner's existing attitudes, experiences, and knowledge that they bring with them. Prior knowledge affects how new information is perceived, organized, and connected to. The document also outlines how to use prior knowledge in instruction, such as identifying students' prior knowledge, deliberately using it to present new information, and checking for faulty prior knowledge. Various learning theories, conditions that influence transfer of learning, learning strategies, and instructional sequences are also presented.