This document discusses revisions to Bloom's Taxonomy of cognitive skills. It outlines Anderson and Krathwohl's 2001 revision of Bloom's Taxonomy, including the hierarchical and linear nature of the model. It also notes criticisms of the taxonomy, such as that thinking is a non-linear process and the categories overlap. The document explores testing and critiquing the revised model, examining its usefulness for lesson planning, materials design, and curriculum design, as well as implications for assessing task complexity based on content, strategies used, and environmental factors.