The document discusses language acquisition versus learning a language. It summarizes Krashen's Natural Approach theory, which has 5 main hypotheses: 1) Acquisition-Learning Hypothesis, 2) Natural Order Hypothesis, 3) Input Hypothesis, 4) Monitor Hypothesis, and 5) Affective Filter Hypothesis. The Natural Approach focuses on providing comprehensible input, a low-anxiety environment, and meaningful interaction to help students acquire a language naturally.