The document discusses higher order thinking skills and Bloom's Taxonomy. It explains that Benjamin Bloom created a taxonomy of learning objectives in 1956 that classified educational goals from simple recall to more complex thinking skills. The original taxonomy included knowledge, comprehension, application, analysis, synthesis, and evaluation. This was later revised to remove synthesis and replace it with creating. The document also discusses Webb's Depth of Knowledge (DOK) levels which range from recall and reproduction to extended strategic thinking. It provides examples of question stems aligned with each level of Bloom's Taxonomy and DOK to illustrate higher order thinking skills.