Mr. Clifford's 60 second explanation of the differences between a perfectly competitive product market and a perfectly competitive resource market. Notice that the firms both have a horizontal curve but in the product market it is demand...

This Video Explains Marketing - Distribution Channels

In this video, we learn how to relate changes in the edges of a cube to changes in its volume using polynomial equations. We explore the concept of polynomial identities and how they can be used to simplify expressions and find the new...

The video discusses the relationship between orbital speed, orbital radius, and orbital period of objects in space. It explains how to calculate orbital speed using an equation and provides examples such as calculating the orbital speed...

Mr. Clifford's 60 second explanation of positive externalities (aka: spillover benefits). Notice that there are two different demand curves. One is the marginal private benefit which ignores the spillover benefits of flu shots and the...

The Rocky Mountains supply water to more than 60 million homes in the West, but this crucial water shed is in peril due to a tiny insect called the mountain pine beetle. Scientists Reed Maxwell of Colorado School of Mines and John...

This activity is designed to help you master the key graphs of macroeconomics or microeconomics. If you can spot what’s wrong with each graph you will be less likely to make those mistakes. The handout for the activity is free and is...

In this video, the teacher explains the importance of maintaining stock records in accounting. The video discusses how stock ledger accounts are used to keep track of the quantity and value of stock, and different methods of valuing...

Crystal Lattice Structures: Density Calculation 4

This video introduces the concept of the distributive property and shows how it can be used to solve multiplication problems. It explains the common mistake of not distributing the number outside the parentheses to all the numbers inside...

This video discusses the determinants of price elasticity of demand, which is a key concept in economics. The video uses two examples and explains the five main factors that affect the price elasticity of demand at an A-level, including...

This is an old video where I explain aggregate demand, aggregate supply, and long run aggregate supply. Keep in mind that the "long run" is not a specific amount of time. The long run refers to enough time for resource prices (like...

Although the Greeks initially thought all numeric qualities could be represented by the ratio of two integers, i.e. rational numbers, we now know that not all numbers are rational. How do we know this?

In this video I explain how to draw a monopoly making a profit. Remember to produce at MR = MC at charge a price up to the demand curve.

Here is a practice FRQ from the 2005 AP Micro exam. Try it on your own and then go over the answers.

In this video, students learn how to prove a pattern in a relationship by squaring the sum of two terms. They are shown how to distribute the terms and simplify the expressions to arrive at an identity. The video also provides an example...

In this video I explain how to show the effects tariffs and quotas on a supply and demand graph. The days I filmed this video were in "spirit week". One day was sports day (that's why I'm dressed like a coach) and the other day was...

Join the hundreds of thousands of students that have used Mr. Clifford's videos and resources to ace your microeconomics course.

My 60 second explanation of the difference between lump sum and per unit subsidies. Remember, lump sum affects only fixed costs so MC won't shift. A per unit subsidy will affect MC and therefore output.

In this video lesson, students learn how to use right triangles and angles of elevation and depression to find the height of a space shuttle on a launch pad. The lesson explains the concept of mathematical modeling and guides students...

My 60 second explanation of how to draw and excise tax (a per unit taxes on producers). You calculate the tax revenue, spending by consumers and revenue to firms. The bonus round shows shows what happens to consumer's surplus and...

Mr. Clifford's 60 second explanation of disequilibrium, surplus, and shortage.

The video discusses the differences between the classical long-run aggregate supply curve (LRAS) and the Keynesian aggregate supply curve, with a focus on their shapes and shifts based on changes in factors of production.

Series | Limit Comparison Test: Example 2