Anderson and Krathwohl are known for their work in educational theory, particularly for revising Bloom's Taxonomy. In 2001, they published a new framework that updated the original taxonomy created by Benjamin Bloom in 1956. Their revision aimed to make the taxonomy more applicable to modern education by emphasizing the importance of skills and knowledge in learning. The revised taxonomy consists of two dimensions: the cognitive process dimension and the knowledge dimension. The cognitive process dimension includes categories such as remembering, understanding, applying, analyzing, evaluating, and creating. The knowledge dimension categorizes types of knowledge, including factual, conceptual, procedural, and metacognitive knowledge.