This document summarizes Benjamin Bloom's taxonomy of educational objectives. It discusses the three domains of cognitive, affective, and psychomotor objectives. Within the cognitive domain, it describes Bloom's original six categories (knowledge, comprehension, application, analysis, synthesis, evaluation) and Lorin Anderson's revised categories (remembering, understanding, applying, analyzing, evaluating, creating). It provides examples of questions to assess each category. Overall, the document provides an overview of Bloom's taxonomy, its use for classroom planning, and the revision made to the cognitive domain categories.