Refreshed and updated PowerPoint resources aimed at assisting teachers with the delivery of the CAIE (9609)A-level Business specification. These slides are designed to support the delivery of Demand and Supply (3.1 The Nature of Marketing). They analyse and explain the concepts of supply and demand, the influences acting upon each, what is meant by the equilibrium, the importance of supply and demand in the market, how a change in demand and supply can impact on price and quantity demanded and how to construct and interpret supply and demand diagrams. The slides contain the Quick Fire Five questions and also a practice essay (both with solutions).