The IB core

Selected Pages

Unit 3.2(1): Variations in economic activity - aggregate demand (AD)
The level of economic activity measured by the real GDP of a country is determined by the interaction of aggregate demand...
Unit 2.9: Public goods
Public goods or pure public goods are goods that bring significant social benefits to society but cannot be provided by...
The price mechanism
The world price of natural gas has increased from $2.50 per unit to $5.60 per unit over the last 12 months – an increase...
Revenue theory (HL only)
This lesson focuses on more definitions of costs and revenue and contains several paper three-type questions. Learning by...
Unit 2.8(1): Market failure – externalities
Markets fail when the free market forces of demand and supply lead to an allocation of resources that does not maximise...
Balance of payments
Questions AnswersBangladesh’s balance of payments current account is a casualty of rising world energy prices. The country’s...