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Science · Grade 12

Policy Claims and Scientific Evidence

Environmental decisions mix scientific evidence with values and costs. Learners separate empirical claims from value judgements and recommendations, judge how strong the evidence behind a claim is, compare options with cost-effectiveness and benefit–cost reasoning under uncertainty, describe policy instruments neutrally, and communicate uncertainty honestly in a short evidence-based policy brief.

  • 5 lessons
  • About 125 minutes
  • Evidence and policy check: 10 questions
  • Ways to answer: choose an answer, draw a graph, highlight a text, match pairs, type a number and put in order
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What learners will discover

  • Distinguish empirical claims, value judgements and policy recommendations in environmental arguments.
  • Evaluate the strength of evidence for a claim, considering study design, sample size, confounding, replication and misleading data presentation.
  • Compare options with cost-effectiveness, benefit–cost ratios and expected values, and test how conclusions change with uncertain assumptions.
  • Explain commons problems and externalities, and describe the mechanisms and tradeoffs of policy instruments without partisan judgement.
  • Communicate scientific uncertainty with calibrated language and ranges in an evidence-based policy brief.

Lessons

  1. Claims, values and recommendations 5 steps3 practiceabout 22 min
  2. How strong is the evidence? 7 steps4 practiceabout 28 min
  3. Comparing options with numbers 7 steps5 practiceabout 27 min
  4. Commons, externalities and policy instruments 6 steps4 practiceabout 25 min
  5. Communicating uncertainty and writing a brief 5 steps3 practiceabout 23 min
  6. Evidence and policy check 10 questions at the end

Keep exploring

More 12th grade science

Guide for grown-ups