CIE 生物
CIE Biology 9700 P3 Concept Map
36 个知识节点 · P3
1. Dilution setup
Serial Dilution Design（连续稀释设计）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 Q1(a)(i)
Complete serial dilution reducing concentration by factor of ten.
9700/33 O/N/25 Q1(a)(ii)
Complete half-step serial dilution diagram.
Proportional Dilution Calculations（比例稀释计算）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/33 O/N/25 Q1(a)(i)
Find volume of water to make 20 cm3 of 1.0% from 20.0%.
9700/34 M/J/24 Q1(a)(i)
Complete dilution table for salicylic acid standards.
2. Solution handling
Accurate Volume Transfer（准确移液）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 practical steps
Transfer 1 cm3 consistently to multiple tubes.
9700/33 O/N/25 steps 10-11
Withdraw equal 2 cm3 samples at fixed depth.
Contamination Control（污染控制）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 setup
Prevent carry-over between concentrations.
9700/33 O/N/25 dialysis task
Rinse dialysis tubing exterior before setup.
3. Indicators & color change
Benedict and Timing Endpoints（本尼迪克特与终点判定）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/33 O/N/25 Q1(a)(iii)
State Benedict volume and justify.
9700/33 O/N/25 Q1(a)(v)
Record time to first colour change.
Subjective Colour Judgement Limits（颜色主观判断局限）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/33 O/N/25 Q1(a)(vi)
State source of error in colour endpoint.
9700/34 M/J/24 Q1(a)(vii)
Suggest improvement for colour-intensity comparison.
4. Diffusion practicals
Agar Diffusion Distance（琼脂扩散距离）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 Q1(a)(ii)
Record diffusion distance at 10 and 20 min for each concentration.
9700/31 M/J/25 Q1(a)(vii)
Calculate diffusion rate over 20 minutes.
Dialysis Membrane Diffusion（透析膜扩散）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/33 O/N/25 Q1(a)(vii-viii)
Estimate glucose concentration in external samples and explain rise over time.
9700/33 O/N/25 Q1(a)(iv)
Trend between glucose concentration and time to first colour change.
5. Table construction
Independent/Dependent Headings（自变量与因变量表头）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 Q1(a)(ii)
Construct results table with correct variable order.
9700/33 O/N/25 Q1(a)(v)
Heading for sample time and time to colour change.
Units and Raw-data Format（单位与原始数据格式）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 table marks
Record whole millimetres for diffusion distance.
9700/33 O/N/25 table marks
Record times to nearest whole second.
6. Graph plotting
Axis Scales and Labels（坐标轴标签与刻度）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 Q1(b)(i)
Plot transmission vs temperature with valid scale.
9700/34 M/J/24 Q1(b)(i)
Plot salicylic concentration in urine against time.
Best-fit and Interpolation（连线与内插）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/34 M/J/24 Q1(b)(ii)
Estimate value at 105 minutes from graph.
9700/31 M/J/25 Q1(b)(i)
Join plotted points appropriately.
7. Observations language
Observable vs Inferred（观察与推断区分）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/33 O/N/25 Q2(b)(i)
State only observable differences between two figures.
9700/34 M/J/24 Q2(b)
List observable differences between specimen images.
Comparative Descriptors（比较型描述词）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/33 O/N/25 Q2(b)(i)
Use comparative language: more/less/present/absent.
9700/34 M/J/24 Q2(b)
Compare bundle number, trichomes, and section shape.
8. Biological drawings
Low-power Plan Drawing（低倍平面图）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 Q2(a)(i)
Draw correct section with no cells and proper bundle pattern.
9700/33 O/N/25 Q2(a)(i)
Draw half-root section with tissue proportions.
High-power Cell Drawing（高倍细胞图）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/33 O/N/25 Q2(a)(ii)
Draw four touching cells with double-line walls.
9700/34 M/J/24 Q2(a)(ii)
Draw four cells with correct proportions and label cell wall.
9. Label quality
Label Lines and Targets（标注线与目标结构）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 drawing marks
Label epidermis accurately with clear line.
9700/33 O/N/25 Q2(a)(i)
Label tissue T involved in transport in plant.
Correct Tissue Naming（组织命名准确性）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/34 M/J/24 Q2(a)(i)
Label vascular bundle correctly.
9700/34 M/J/24 Q2(a)(ii)
Label cell wall correctly in high-power drawing.
10. Measurements
Microscope Measurements（显微测量）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/34 M/J/24 Q2(c)(i)
Measure stem width and central region width with units.
9700/33 O/N/25 measurement tasks
Measure dimensions directly from provided figure.
Ratios and Means（比值与均值）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/34 M/J/24 Q2(c)(ii)
Calculate ratio of stem width to central region width.
9700/34 M/J/24 Q2(c)(iii)
Improve measurement reliability for central region width.
11. Calculations
Rate from Practical Data（由实测数据求速率）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 Q1(a)(vii)
Calculate diffusion rate for 2.0 mol dm−3 HCl.
9700/33 O/N/25 time-series
Infer relative rates from colour-change times.
Percentage Change with Working（百分变化与展示过程）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/33 O/N/25 Q1(b)(ii)
Calculate percentage decrease in blood concentration.
9700/34 M/J/24 graph/data calc
Compute trend-based percentage statements from tabulated values.
12. Trend interpretation
Concentration-gradient Explanations（浓度梯度解释）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 Q1(a)(iii)
Explain effect of HCl concentration on diffusion distance.
9700/33 O/N/25 Q1(b)(iii)
Explain different rates 0–10 min vs 10–20 min.
Time-course Pattern Comments（时间序列模式）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 Q1(a)(viii)
Judge whether results support 'rate decreases over time'.
9700/34 M/J/24 Q1(b)(iii)
Describe change in urine salicylic concentration over 4 hours.
13. Variables
Independent Variable ID（自变量识别）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/34 M/J/24 Q1(a)(vi)
State independent variable in salicylic investigation.
9700/31 M/J/25 setup
Identify manipulated variable in agar diffusion task.
Controlled Variables（控制变量）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 protocol
Keep agar dimensions and timing constant across concentrations.
9700/33 O/N/25 Benedict series
Keep heating and Benedict/sample volumes constant.
14. Errors & uncertainty
Source of Error Statements（误差来源表述）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 Q1(a)(iv)
Suggest one source of error in measuring diffusion depth.
9700/33 O/N/25 Q1(a)(vi)
State source of error in first colour-change timing.
Improvement Linked to Error（改进需对应误差）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 Q1(a)(vi)
Suggest two improvements for estimating unknown concentration U.
9700/34 M/J/24 Q1(a)(vii)
Propose improvement to reduce colour-judgement error.
15. Estimation tasks
Unknown Concentration Estimation（未知浓度估计）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 Q1(a)(v)
Estimate HCl concentration in U from diffusion data.
9700/34 M/J/24 Q1(a)(iv)
Estimate concentrations of S1 and S2 using intensity standards.
Using Calibration-like Trends（类校准曲线思想）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/33 O/N/25 Q1 sequence
Use concentration vs time-to-colour trend to infer unknown samples.
9700/34 M/J/24 S1/S2 comparison
Match unknown intensity against prepared concentration standards.
16. Hypothesis judgement
Support/Not-support Logic（支持与否判断）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 Q1(a)(viii)
Tick support or not support hypothesis and justify.
9700/33 O/N/25 trend statements
Judge if data are consistent with diffusion-driven increase.
Evidence Sentence Quality（证据句质量）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/34 M/J/24 Q1(b)(iii)
Describe trend with quoted values.
9700/31 M/J/25 explanation items
Use mechanistic link words: because/therefore.
17. Safety and risk
Hazard-aware Handling（危险性意识）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 instructions
Handle irritant HCl with eye protection and immediate wash protocol.
9700/34 M/J/24 instructions
Handle harmful salicylic/FeCl3 solutions appropriately.
Procedural Safety Controls（程序化安全控制）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/33 O/N/25 Benedict heating
Use boiling water-bath safely for repeated tests.
9700/31 M/J/25 multi-step practical
Sequence tasks to reduce rushed handling errors.
18. P3 exam execution
Workflow During Waiting Periods（等待时间工作流）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31 M/J/25 step guidance
Use 10-minute waiting intervals productively.
9700/33 O/N/25 timed sampling
Manage 5-min interval sampling without missing endpoints.
Final-check Scoring Gains（终检提分点）
📖 DefinitionP3 focuses on practical execution, data recording, and evaluation under timed conditions.
🔑 KeyMarks are awarded for precise method details, correct data format, and evidence-based conclusions.
🎯 Exam focusHigh-frequency losses come from headings/units, graph conventions, and vague error-improvement responses.
🛠️ TechniqueStep 1: identify exactly what the question demands.
Step 2: write observable, specific, mark-point style statements.
Step 3: cross-check units, labels, and evidence linkage.
9700/31,33,34 P3 common
Final scan for units, headings, and graph labels.
9700/31 Q2 drawing, 34 Q2 drawing
Final scan for drawing conventions and label placement.