In this video I explain how to draw and analyze a perfectly competitive market and firm...and you get to meet Mr. DARP. Makes sure that you can use the graph calculate total revenue, total cost, and profit.

In this video I cover all the concepts for an introductory microeconomics course and AP course. I go super fast so don't take notes. Focus on the big picture ideas, identfy what you still need to practoce, and go back and watch my Unit...

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

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 I explain how to draw and analyze the cost curves. Most teacher sad professors focus on the per unit cost curves. That included marginal cost, average total cost, average variable costs, and the average fixed cost. Each...

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

Hey econ students. In this video I go over the characteristics of perfect competition and explain how to draw and shift the graph. Make sure that you can calculate total revenue, total cost, and profit and show what happens on...

Hey econ students. If there is only ONE thing that you need to know for your microeconomics class and for running your own business it’s the profit-maximizing rule. You always produce where MR = MC. Well, not always. Sometimes you should...

In this video I explain why MC decreases and then increases and why the MC hits ATC at the minimum point of the ATC curve. Very exciting stuff!

Mr. Clifford's 60 second explanation of the four per unit costs curves (MC, AVC, AFC, and ATC). The bonus round shows how you use the graphs to calculate TC, VC, and FC.

In this video I explain the costs of production including fixed costs, variable costs, total cost, and marginal cost. Make sure that you know how to calculate the per unit costs: AVC, AFC, and ATC.