Granularity is a hierarchical concept associated with the relative degree of complexity of a component part to its aggregate, subsuming structure. Fine silt is more granular than sand, which is more granular than rock, and so forth. In taxonomic development, the smaller the relative size to the taxons (units) of classification, the higher the degree of granularity. In instructional design, the concept of granularity is multifaceted, and can refer to the size of learning units or scope (e.g., degree or certificate curricula, courses, lessons, modules, activities); learning element prioritization or sequencing (e.g., logical order of lessons, concept formation and skill acquisition to optimize scaffolding in new knowledge construction); content domains architecture (e.g., superordinate concepts, subordinate concepts, rules, principles); teaching strategy (e.g., individual vs. group learning, passive learner/expository vs. active leaner/discovery, inductive vs. deductive, tutorial vs. simulation, abstract vs. problem-oriented, synchronous online chat vs. asynchronous threaded discussions, etc.); media design and utilization (e.g., relative size and complexity of single components or combined components, type of media element including text, graphics/visuals, audio, animation, degree of user control, etc.); and learner assessment (e.g., conventional declarative-convergent testing using multiple-choice, matching, and short-answer questions vs. holistic, constructivist-divergent portfolios with demonstration work-product artifacts from individual and group projects, internships, and service learning).