price determination
4 detailed 50-minute lessons with teaching scripts, worked examples, parent guides, and assessment criteria.
Lesson Overview
Total Lessons: 4
Tier: Foundation and Higher
Duration: 50 minutes per lesson (200 minutes total)
Exam Boards: AQA, Edexcel, OCR, Eduqas, CCEA
Tier: Foundation and Higher
Duration: 50 minutes per lesson (200 minutes total)
Exam Boards: AQA, Edexcel, OCR, Eduqas, CCEA
Learning Objectives
- Explain the key ideas of price determination
- Apply price determination to exam-style questions
- Develop independent study skills
- Build cross-topic connections
Prerequisites
- Read the revision notes for price determination first (GCSE Revise summary)
- Key vocab to pre-teach: Economics Exam Tips
- Basic skills: reading the summary notes and answering the practice questions there
Materials & Equipment
- Exercise book, coloured pens
- Ruler
- Printed revision notes (link below)
- Internet for videos (see Resources)
Lesson 1: Introduction: price determination
Duration: 50 minutes
Starter Activity (5 minutes)
Quick Recall
Write down everything you already know about price determination. Then check against the key terms: Economics Exam Tips. Use a mini-whiteboard or paper.
Main Content (35 minutes)
Parent/Teacher Guide:
Before lesson: Read the script below. Pre-teach key vocab: Economics Exam Tips.
If stuck: Re-read the revision notes (link above), then break the content into smaller steps.
Extension: See the Stretch & Challenge ideas in Lesson 4.
Before lesson: Read the script below. Pre-teach key vocab: Economics Exam Tips.
If stuck: Re-read the revision notes (link above), then break the content into smaller steps.
Extension: See the Stretch & Challenge ideas in Lesson 4.
Teaching Script (35 mins):
Mins 0-5 - Hook: "Today: price determination. By the end you will be able to answer exam questions on it unaided. It connects to the rest of Economics because the ideas here recur across the spec."
Mins 5-20 - Direct Instruction: Work through the core ideas below one at a time; after each, ask your student to explain it back in their own words.
Mins 20-30 - Guided Practice: Model the worked example together, then let your student attempt the first practice question with guidance.
Mins 30-35 - Independent Practice: 2-3 practice questions from Lesson 3 below, with immediate feedback.
Mins 0-5 - Hook: "Today: price determination. By the end you will be able to answer exam questions on it unaided. It connects to the rest of Economics because the ideas here recur across the spec."
Mins 5-20 - Direct Instruction: Work through the core ideas below one at a time; after each, ask your student to explain it back in their own words.
Mins 20-30 - Guided Practice: Model the worked example together, then let your student attempt the first practice question with guidance.
Mins 30-35 - Independent Practice: 2-3 practice questions from Lesson 3 below, with immediate feedback.
First Look
Start with the revision notes summary, then attempt: Explain how equilibrium price is determined using a supply and demand diagram.
Plenary (5 minutes)
Check Out
Your student states one thing they learned and one question they still have about price determination.
Lesson 2: Core Concepts: price determination
Duration: 50 minutes
Starter Activity (5 minutes)
Review Previous Lesson
Quick recap: write 3 key points from Lesson 1 on price determination. Check them against the notes below.
Main Content (35 minutes)
Key Fact: Equilibrium price is where supply equals demand — the market clears with no excess.
Key Fact: Excess demand (shortage) occurs below equilibrium — consumers want more than producers supply, pushing price up. Excess supply (surplus) above equilibrium pushes price down.
Key Fact: An increase in demand raises equilibrium price and quantity. An increase in supply raises quantity but lowers price.
Key Fact: When both supply and demand shift, the effect on price or quantity depends on relative size of shifts.
Key Fact: Revenue = price x quantity. On a diagram, revenue is the rectangle formed by equilibrium price and quantity. Price rises don't always increase revenue — depends on PED.
Economics Exam Tips: When analysing price changes, use the DEM framework: Direction (which way do curves shift?), Extent (how large, depends on elasticity?), Magnitude of effect (what happens to P and Q?).
| Term | Meaning | Example |
|---|---|---|
| Cause | Price below equilibrium | Price above equilibrium |
| Qd vs Qs | Quantity demanded exceeds quantity supplied | Quantity supplied exceeds quantity demanded |
| Price pressure | Upward (prices tend to rise) | Downward (prices tend to fall) |
| Market response | Consumers bid up prices; producers supply more | Firms cut prices to sell stock; consumers buy more |
| UK example | Pandemic toilet paper shortage 2020 | Excess high-street retail stock in recessions |
| Government response | May impose price cap or rationing | May buy surplus or subsidise demand |
Practice (10 minutes)
Q: Explain how equilibrium price is determined using a supply and demand diagram.
Answer: Equilibrium is where supply and demand curves intersect. Quantity demanded = quantity supplied. Above equilibrium: excess supply (prices fall). Below: excess demand (prices rise). The market adjusts to equilibrium through the price mechanism.
Plenary (5 minutes)
Explain Back
Your student teaches the key points back to you without looking. Fill any gaps immediately.
Lesson 3: Application: price determination
Duration: 50 minutes
Starter Activity (5 minutes)
Quick Recall
Recall the key terms: Economics Exam Tips. Define each in one sentence.
Main Content (35 minutes)
Parent/Teacher Guide: Let your student attempt each question alone first, then compare with the model answer. Award method marks for correct working even if the final answer is wrong.
Q1: Explain how equilibrium price is determined using a supply and demand diagram.
Answer: Equilibrium is where supply and demand curves intersect. Quantity demanded = quantity supplied. Above equilibrium: excess supply (prices fall). Below: excess demand (prices rise). The market adjusts to equilibrium through the price mechanism.
Q2: Using a diagram, show what happens to equilibrium when demand increases but supply is unchanged.
Answer: When demand increases (shifts right D→D1), at the original price there is excess demand. Consumers bid up price, producers supply more. New equilibrium: higher price (P1) and higher quantity (Q1).
Q3: Analyse how a poor wheat harvest would affect bread price, quantity, and producer revenue.
Answer: Poor harvest reduces wheat supply (shifts left). Excess demand at original price pushes bread prices up. Equilibrium price rises, quantity falls. Effect on revenue depends on PED: if bread demand is inelastic (likely — staple), price rise exceeds quantity fall, so total revenue INCREASES.
Plenary (5 minutes)
Error Review
Review any questions answered incorrectly. Identify whether the error was knowledge, method, or reading the question.
Lesson 4: Exam Practice: price determination
Duration: 50 minutes
Starter Activity (5 minutes)
Command Words
Review what these command words require: state (one point), describe (say what happens), explain (say why), compare (both sides), evaluate (judgement).
Main Content (35 minutes)
Extended Answer
Extended question: Full-Mark Response Evaluate what would happen to the home-delivered food market if both demand and supply increase. <div class="
A grade 9 response will: analyse demand increase (online ordering trend); analyse supply increase (more platforms); combined effect: quantity definitely rises, price indeterminate; if supply shifts more, price falls; conclude: most likely higher quantity with stable or lower prices as competition keeps prices down.
Exam Tips: Always draw diagrams with BOTH curves, clearly labelling original and new equilibrium (P,Q → P1,Q1). | When both curves shift, state that one variable's direction is INDETERMINATE without knowing relative magnitudes. | Link revenue to elasticity: price rise + inelastic demand = higher revenue; price rise + elastic demand = lower revenue.
Common Errors: Watch Out! Students often make mistakes here. Wrong: If supply increases, producers always benefit because they sell more. Correct: While supply increases mean more quantity sold, the price falls. Whether producers benefit depends on elasticity: if demand is elastic, revenue rises. If inelastic, the price fall may be so large that revenue falls — the 'paradox of bounty' where bumper harvests reduce farm incomes.
Stretch & Challenge (Grade 8-9):
- Synoptic links: explain how price determination connects to another Economics topic you have studied
- Real-world: research one real-world use or example of price determination
- Critical: "What are the limitations of the models used in price determination?"
Plenary (5 minutes)
Assessment Criteria
- Got it: Confident explanation + correct worked examples
- Getting there: Main points OK, needs support with detail
- Not yet: Confused on key concepts - re-run Lesson 2
Homework & Consolidation
- Consolidation: Re-answer any Lesson 3 practice questions answered incorrectly (20 mins)
- Retrieval: Write flashcards for the key terms: Economics Exam Tips (10 mins)
- Exam practice: One past-paper question on price determination from the board websites (15 mins)
- Extension: Explain price determination to someone else in your own words (10 mins)