Law of Supply
Here is a wonder article from the BBC which helps teaching the Law of Supply to your AS Economists or indeed your IB sets. There is also a video clip here which shows how wet weather can also affect crops of potatoes.
You could tweak this Q&A article for a homework and use graph to help demonstrate why the volitity of the price of wheat effects us all. A great table at the bottom of this article shows the concept of over or under production and it's consequences.
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A comprehensive collection of editable lesson topic worksheets and case studies to support the teaching of the core teaching content of the OCR Year 2 A Level Economics specification
This is the comprehensive PowerPoint used in the A Level Economics revision webinar titled Essential A Level Economics: Year 2 (Micro) - Costs of Production.
This is the slide deck from the recent student revision webinar on Essential A Level Economics: Year 2 (Micro) - Profits
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