This document provides an overview of foundational theories and frameworks in the instructional technology field. It discusses key concepts like learning and instruction, and summarizes several important psychological foundation theories including constructivism, cognitive information processing theory, Gagne's theory of instruction, and situated learning theory. It also covers motivational theories and models such as achievement motivation, the time-continuum model, and the ARCS model. Finally, it discusses different learning environments including integrated learning systems, distance learning, advance organizers, and learning communities.