Hidden Assumptions & Argument Analysis Worksheets Grades 9–12 | Critical Thinking & Reasoning

Strengthen critical thinking, argument analysis, and evidence-based reasoning with this comprehensive Grades 9–12 resource. Designed for secondary English, critical thinking, media literacy, argumentation, and interdisciplinary learning, these worksheets help students identify hidden assumptions, distinguish claims from evidence, evaluate reasoning gaps, and develop more precise, defensible conclusions. The resource includes instructional anchor charts, scaffolded worksheets, extended reasoning activities, answer keys, and a cumulative assessment. Students work with realistic arguments involving advertising, recommendations, numerical evidence, competing viewpoints, source-based claims, causation, predictions, and practical decision-making. Students practise how to: - Identify claims, evidence, and unstated assumptions - Judge assumptions as reasonable, questionable, or unsupported - Recognise missing information and alternative explanations - Analyse association, causation, and quantitative evidence - Test whether conclusions remain valid when assumptions fail - Evaluate persuasive and informational claims - Revise overconfident arguments into more accurate conclusions Ideal for whole-class instruction, guided practice, independent work, homework, learning stations, intervention, enrichment, formative assessment, and argument-writing units. The progressive structure supports teachers, educators, homeschoolers, and school professionals seeking ready-to-use critical thinking and argument analysis activities for secondary learners.