The document discusses Bloom's Taxonomy, which is a classification of learning objectives within education. It outlines both the original and revised versions of Bloom's Taxonomy, which categorizes learning objectives according to their cognitive complexity and knowledge dimensions. The original taxonomy included categories like knowledge, comprehension, application, analysis, synthesis, and evaluation. The revised version updated these categories and organized them hierarchically, with lower order thinking skills like remembering at the base and higher order skills like creating at the top. It also included additional knowledge dimensions like factual, conceptual, procedural, and metacognitive knowledge.