The document discusses Bloom's taxonomy, which is a framework for classifying educational goals and objectives. It was developed in the 1950s by Benjamin Bloom and categorizes objectives according to their complexity into cognitive, affective, and psychomotor domains. The cognitive domain involves knowledge, comprehension, application, analysis, synthesis, and evaluation. The taxonomy was revised in 2001 and includes remembering, understanding, applying, analyzing, evaluating, and creating. Objectives are important for establishing shared learning goals between teachers and students and for planning effective instruction and assessment aligned to those objectives.