Foreign exchange rates
- IGCSE Economics
- Theme 6: International trade and globalisation
Speaker notes: Introduce the topic and explain that understanding exchange rates is crucial for international trade and finance.
Learning objectives
- Define what a foreign exchange rate is
- Explain reasons for buying and selling foreign currencies
- Describe how exchange rates are determined
- Analyse the consequences of changes in exchange rates
Speaker notes: Outline the key points students will learn by the end of the lesson.
Starter question
- Imagine you are planning a trip to the USA. How might the exchange rate between your currency and the US dollar affect your trip?
Speaker notes: Encourage students to think about how exchange rates impact real-life situations, such as travel costs.
Definition of foreign exchange rate
- The price of one currency in terms of another
- Expressed as a rate, e.g., 1 GBP = 1.35 USD
- Determines the value of currencies in international trade
Diagram explained
The x-axis shows the quantity of US dollars, and the y-axis shows the exchange rate in GBP per USD. The demand and supply curves meet at the equilibrium exchange rate, where the quantity of USD demanded equals the quantity supplied. At this point, the market is in balance.
- Identify the demand and supply curves.
- Locate the equilibrium point where the curves intersect.
- Note the equilibrium exchange rate and quantity of USD.
Speaker notes: Explain that the exchange rate is the value of one currency for the purpose of converting it to another currency. This is crucial for international transactions.
Reasons for buying and selling foreign currencies
- Importers need to buy foreign currency to pay for goods
- Exporters sell foreign currency to receive payment
- Tourists buy foreign currency for travel
- Investors buy foreign currency to invest abroad
Speaker notes: Discuss the various reasons why individuals and businesses might need to buy or sell foreign currencies, such as trade, travel, and investment.
Determination of foreign exchange rate
- Set by the forces of demand and supply in the foreign exchange market
- Demand for a currency increases if it is expected to appreciate
- Supply of a currency increases if it is expected to depreciate
- Governments and central banks can influence exchange rates
Diagram explained
The x-axis shows the quantity of US dollars, and the y-axis shows the exchange rate in GBP per USD. The demand for GBP shifts right, causing the exchange rate to rise. This means that the pound has appreciated, making imports cheaper and exports more expensive.
- Identify the initial equilibrium point.
- Note the shift in the demand curve to the right.
- Observe the new equilibrium point with a higher exchange rate.
Speaker notes: Explain that exchange rates are determined by the interaction of demand and supply in the foreign exchange market, and that expectations and government actions can influence these rates.
Consequences of changes in foreign exchange rates
- Appreciation makes imports cheaper and exports more expensive
- Depreciation makes imports more expensive and exports cheaper
- Affects the cost of travel and investment abroad
- Can influence inflation and economic growth
Speaker notes: Discuss the various consequences of changes in exchange rates, such as impacts on trade, travel, investment, inflation, and economic growth.
Worked example: Calculating exchange rates
- If 1 GBP = 1.35 USD, how much is 100 GBP worth in USD?
- 100 GBP * 1.35 USD/GBP = 135 USD
- If the exchange rate changes to 1 GBP = 1.40 USD, how much is 100 GBP worth now?
- 100 GBP * 1.40 USD/GBP = 140 USD
Speaker notes: Walk through a simple calculation to show how exchange rates are used to convert currencies. This helps students understand the practical application of exchange rates.
Common mistakes and exam tips
- Mistake: Confusing appreciation with depreciation
- Tip: Remember that appreciation means the currency is stronger
- Mistake: Forgetting to consider both demand and supply in the foreign exchange market
- Tip: Always think about the factors affecting both demand and supply when analysing exchange rates
Speaker notes: Highlight common mistakes students make and provide tips for avoiding them, such as confusing appreciation and depreciation, and ensuring both demand and supply are considered.
Key terms
- Foreign exchange rate: The price of one currency in terms of another
- Appreciation: An increase in the value of a currency
- Depreciation: A decrease in the value of a currency
- Exchange rate market: The market where currencies are bought and sold
Speaker notes: Define key terms related to foreign exchange rates to ensure students understand the terminology used in the topic.
Plenary: Quick-check questions
- What is a foreign exchange rate?
- Why might a business need to buy foreign currency?
- How is the exchange rate determined in the foreign exchange market?
- What are the consequences of currency appreciation?
- How would a depreciation affect imports and exports?
Speaker notes: Ask students these questions to check their understanding of the key concepts covered in the lesson.
Plenary: Summary
- Exchange rates are determined by demand and supply in the foreign exchange market and have significant impacts on trade and the economy.
Speaker notes: Summarise the key points of the lesson to reinforce students' understanding.