Comprehensive study and exam-tips package for Pearson Edexcel A Level Economics B (9EB0). Features deep insights into Paper 1, 2, and 3 structures, step-by-step guidance on calculation layouts, and tactical advice on drafting high-scoring 20-mark evaluation essays without dropping easy marks on diagrams or generic conclusions.
A scientific or graphical calculator that meets JCQ regulations may be used (some GCSE Mathematics and Science papers are non-calculator). Graphical calculators must be set to exam mode; you must clear any stored programs, notes or data before the exam, and the calculator must not be able to retrieve stored text or formulae.
AO1: AO1: Demonstrate knowledge of terms/concepts/theories (23%)
AO2: AO2: Apply knowledge to a variety of contexts (26%)
AO3: AO3: Analyse economic and business issues (26%)
AO4: AO4: Evaluate economic and business decisions/policies/proposals (25%)
วัตถุประสงค์: Plot a function to read its roots (zeros), points of intersection, and maxima/minima.
ใช้เมื่อใด: Checking solutions, sketching, or solving where an analytic method is hard.
ขั้นตอน
Graph the function(s) and use the built-in zero, intersect and maximum/minimum tools.
ข้อควรระวังในการสอบ: Allowed under JCQ rules, but you must still show your method — an unsupported calculator answer earns no method marks. Clear all stored programs, notes and data (graphical calculators in exam mode) before the exam.
Numerical equation solver
Graphical calculator / GDC (exam mode)
วัตถุประสงค์: Solve an equation or find a variable numerically when an algebraic route is long or implicit.
ใช้เมื่อใด: Iterative or implicit equations, or to confirm an algebraic solution.
ขั้นตอน
Use the equation/zero solver, entering the equation and a sensible starting estimate.
ข้อควรระวังในการสอบ: Allowed under JCQ rules, but you must still show your method — an unsupported calculator answer earns no method marks. Clear all stored programs, notes and data (graphical calculators in exam mode) before the exam.
Numerical integration & differentiation
Graphical calculator / GDC (exam mode)
วัตถุประสงค์: Evaluate a definite integral \(\int_a^b f(x)\,dx\) or a gradient \(f'(x)\) at a point.
ใช้เมื่อใด: Checking calculus answers, or where only a numerical value is needed.
ขั้นตอน
Use the GDC's numeric integral / derivative function with the limits or the point.
ข้อควรระวังในการสอบ: Allowed under JCQ rules, but you must still show your method — an unsupported calculator answer earns no method marks. Clear all stored programs, notes and data (graphical calculators in exam mode) before the exam.
Statistics & probability distributions
Graphical calculator / GDC (exam mode)
วัตถุประสงค์: 1-var/2-var statistics, linear regression, and cumulative binomial / normal / Poisson probabilities without tables.
ใช้เมื่อใด: Statistics questions and hypothesis tests.
ขั้นตอน
Enter data in the statistics editor, or use the distribution menu (binomial cdf, normal cdf, …).
ข้อควรระวังในการสอบ: Allowed under JCQ rules, but you must still show your method — an unsupported calculator answer earns no method marks. Clear all stored programs, notes and data (graphical calculators in exam mode) before the exam.
ข้อผิดพลาดที่พบบ่อย
1highคะแนนที่เกี่ยวข้อง: 2Price determination
Drawing supply and demand diagrams with missing axes labels, missing equilibrium lines, or reversed shift indicators (e.g. showing a supply shift instead of a demand shift when restrictions are lifted).
วิธีหลีกเลี่ยง: Always label your axes (Price and Quantity for micro, Price Level and Real GDP for macro), draw dashed lines connecting equilibriums to the axes, and include arrows showing the direction of the curve shift.
Treating long-form evaluation essays as generic textbook summaries without applying details from the provided case studies.
วิธีหลีกเลี่ยง: Integrate specific data points, dates, company names, or macroeconomic events directly from the text to anchor your chains of reasoning into the real-world context.
3mediumคะแนนที่เกี่ยวข้อง: 4Profit and loss
Failing to convert mathematical units correctly in quantitative calculation tasks, such as mixing up millions and billions, or omitting necessary units (like % or currency symbols).
วิธีหลีกเลี่ยง: Write down the full formula first, solve intermediate steps clearly on paper, check the scale of the numbers, and always append the correct symbol (e.g., % or £/$) with the specified decimal rounding.
4highคะแนนที่เกี่ยวข้อง: 8Arguments for and against regulation
Writing one-sided arguments in 20-mark evaluation essays without presenting counter-arguments or a final dependent conclusion.
วิธีหลีกเลี่ยง: Adopt a balanced essay structure: analyze benefits, evaluate constraints or drawbacks, and construct a final judgment that explicitly states 'On what does this depend?'.
5mediumคะแนนที่เกี่ยวข้อง: 4Inflation
Confusing deflation (a sustained drop in the general price level) with disinflation (a slowing down of price level growth).
วิธีหลีกเลี่ยง: Remember that if the Consumer Price Index (CPI) increases but at a lower rate (e.g. from 10% to 5%), it is disinflation. CPI must actually fall (negative rate) for it to be deflation.
6mediumคะแนนที่เกี่ยวข้อง: 6Exchange rate changes
Assuming a depreciation of the exchange rate will automatically improve the balance of trade without acknowledging the roles of price elasticity of demand (PED) or the Marshall-Lerner condition.
วิธีหลีกเลี่ยง: Evaluate the impact by discussing how import/export volumes will change depending on whether demand is price elastic or inelastic in the short-run vs. long-run.