This document defines higher order thinking skills (HOTS) and discusses Bloom's Taxonomy of educational objectives. It explains that HOTS involve more cognitive processing like synthesizing, analyzing, and evaluating, compared to lower-order skills. Benjamin Bloom developed a taxonomy of learning objectives with six levels moving from lower to higher order thinking. The document outlines the three domains of Bloom's Taxonomy - cognitive, affective, and psychomotor - and discusses the cognitive domain and its levels in more detail.