PreparED Study Materials
ECON 180: Principles of Economics: Microeconomics
School: Johns Hopkins University
Number of Notes and Study Guides Available: 0
Videos
Elasticity & Trade: How Demand Shapes Economic Gains for Nations
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Explore how elasticity of demand impacts gains from trade in economies. Understand the relationship between demand elasticity and benefits for consumers and producers. Debunk misconceptions about inelastic demand and trade gains.
How Unexpected Inflation Impacts Creditors, Debtors, & Business Operat
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Unexpected inflation can shift wealth between lenders and borrowers. This phenomenon affects the real value of money repaid, disadvantaging the creditors. Additionally, businesses face operational expenses like menu costs during inflation adjustments.
Micro vs. Macro: Unraveling the Twin Pillars of Economic Study Explain
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Unpack the primary subdivisions of economics: Microeconomics, centered on individual economic agents, and Macroeconomics, which looks at broader economic trends. Understand the core differences and inherent connections between these two fields. Explore real-world examples to comprehend their implications.
Opportunity Cost Explained: Weighing Choices in Business Decisions
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Discover the principle of opportunity cost, distinguishing between explicit and implicit costs. Using the example of Hanna's Pizzeria, grasp how business decisions weigh the costs of forgone alternatives. Learn how these costs influence financial and economic choices.
Barter to Money: How Double-Coincidence of Wants Evolved Trade
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Explore the historical barter system and its challenges, particularly the double-coincidence of wants. Witness how the need for simpler transactions led societies from direct barter to embracing mediums of exchange like money.
Explaining Economic Logic of Purchasing-Power Parity
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This video explains the theory of Purchasing Power Parity (PPP) in economics, emphasizing how it relies on the "law of one price" and illustrating how exchange rates should adjust to equalize purchasing power between nations in the long run. It also demonstrates how price disparities for products like iPhones can lead to currency exchange rate adjustments and eventually equalized prices.








