This document discusses several learning theories and paradigms that guide educational technology: behaviorism, cognitivism, and constructivism. Behaviorism focuses on observable stimulus-response relationships and uses techniques like programmed instruction. Cognitivism examines internal mental processes and draws from theories like information processing. Constructivism emphasizes that learners construct knowledge through authentic experiences and social interactions. The document also notes that different theories may be more appropriate depending on learners' prior knowledge and the complexity of the task. While technology can deliver instruction, the instructional methods are more important than the media itself in determining learning effectiveness.