This document defines and discusses critical and analytical thinking. It defines analytical thinking as breaking down complex information into fundamental parts, and critical thinking as carefully evaluating information to make a sound judgment. It discusses the importance of analytical thinking for problem solving, logical reasoning, and decision making. Some key techniques for comprehension include using prior knowledge, predicting, identifying main ideas, questioning, making inferences, and visualizing. It also discusses sentence and phrase fragments, defining them and providing examples and corrections.