A comprehensive examiner-grade study and exam strategy package for IB Diploma Programme Environmental Systems and Societies (ESS) SL, highlighting structured methodologies for Paper 1 (Case Study) and Paper 2, high-yield essay formulas, and specific conceptual traps to avoid.
読了時間 3 分更新日: 2026年6月21日
試験の概要
試験数
2
満点
100
制限時間
3時間
出題形式
3
試験
時間
配点
問題数
配点比率
出題形式
Paper 1 (Case Study)
1時間
35
12
35%
Data interpretation & Calculations, Short Outline / Suggestion / Explanation, Extended Evaluation, Synthesised Discussion Essay
Paper 2 (Core & Essays)
2時間
65
17
65%
Short Answer & Interpretation, Extended Essay Response
評価段階
1234567
電卓の規定
A graphic display calculator (GDC) from the IB-approved list is required for most Mathematics and Sciences papers and must be set to examination mode. Note that some papers do not permit a calculator (for example Mathematics Paper 1 and the multiple-choice Sciences Paper 1).
AO1: Demonstrate knowledge and understanding of environmental systems and societies. (35%)
AO2: Apply knowledge and understanding of environmental systems and societies to real-world contexts and situations. (35%)
AO3: Synthesize, evaluate, and construct explanations, arguments, and balanced conclusions. (30%)
過去問と採点基準にもとづいて作成(2023–2025)。
電卓プログラム
Graph: zeros, intersections & turning points
Graphical calculator / GDC (exam mode)
目的: Plot a function to read its roots (zeros), points of intersection, and maxima/minima.
使う場面: Checking solutions, sketching, or solving where an analytic method is hard.
手順
Graph the function(s) and use the built-in zero, intersect and maximum/minimum tools.
試験での注意: Use a GDC from the IB-approved list in examination mode. Some papers do not permit a calculator. Always show your reasoning.
Numerical equation solver
Graphical calculator / GDC (exam mode)
目的: Solve an equation or find a variable numerically when an algebraic route is long or implicit.
使う場面: Iterative or implicit equations, or to confirm an algebraic solution.
手順
Use the equation/zero solver, entering the equation and a sensible starting estimate.
試験での注意: Use a GDC from the IB-approved list in examination mode. Some papers do not permit a calculator. Always show your reasoning.
Numerical integration & differentiation
Graphical calculator / GDC (exam mode)
目的: Evaluate a definite integral \(\int_a^b f(x)\,dx\) or a gradient \(f'(x)\) at a point.
使う場面: Checking calculus answers, or where only a numerical value is needed.
手順
Use the GDC's numeric integral / derivative function with the limits or the point.
試験での注意: Use a GDC from the IB-approved list in examination mode. Some papers do not permit a calculator. Always show your reasoning.
Statistics & probability distributions
Graphical calculator / GDC (exam mode)
目的: 1-var/2-var statistics, linear regression, and cumulative binomial / normal / Poisson probabilities without tables.
使う場面: Statistics questions and hypothesis tests.
手順
Enter data in the statistics editor, or use the distribution menu (binomial cdf, normal cdf, …).
試験での注意: Use a GDC from the IB-approved list in examination mode. Some papers do not permit a calculator. Always show your reasoning.
よくあるミス
1high影響する配点: 2Atmosphere and climate change
Writing vague, non-specific statements such as 'it damages the environment' or 'causes pollution' instead of explaining precise chemical or biological pathways.
回避方法: Use specific scientific terminology; explain exact mechanisms, such as 'acid rain lowers soil pH, leaching vital calcium and magnesium ions and releasing toxic aluminum, which damages tree root systems'.
Providing a purely one-sided argument in questions containing command words like 'Evaluate', 'Discuss', or 'To what extent'.
回避方法: Always structure your answer with a balanced perspective, detailing both strengths/advantages and weaknesses/limitations, and conclude with an explicit, supported value-judgment.
3medium影響する配点: 1Ecology
Conflating bioaccumulation with biomagnification or using the terms interchangeably.
回避方法: Use bioaccumulation strictly to describe the buildup of a pollutant within a single organism over its lifespan, and biomagnification to describe the increasing concentration of toxins across successive trophic levels.
Treating positive feedback loops as 'beneficial' or 'good' processes rather than explaining their physical dynamics.
回避方法: Explain positive feedback strictly as an amplifying cycle that destabilizes a system, driving it further away from its initial equilibrium state.
6high影響する配点: 2Atmosphere and climate change
Conflating stratospheric ozone depletion (UV absorption/skin cancer risks) with tropospheric photochemical ozone (photochemical smog/respiratory damage).
回避方法: Distinguish by atmospheric layer: stratospheric ozone is a beneficial shield against harmful UV radiation, while tropospheric ozone is a harmful secondary pollutant formed by NOx and VOCs in sunlight.
7medium影響する配点: 1Natural resources
Suggesting domestic solid waste recycling as a valid strategy for organic food waste management.
回避方法: Do not suggest recycling for organic waste; instead, use composting, anaerobic digestion for biogas production, or managed landfilling as appropriate strategies.
Stating only raw values in data-based questions without performing the necessary calculation steps or showing complete workings.
回避方法: Always show each line of your mathematical calculation (e.g., percentage difference, NIR, or species diversity formulas) to secure working marks even if a minor arithmetic slip occurs.
In Paper 2 Section B essays, failing to reference named, localized geographic case studies or specific human societies when explicitly asked.
回避方法: Prepare and memorize detailed, specific real-world examples (e.g., specific cities, national parks, or agreements) to ground your environmental value systems and waste management evaluations in reality.