AP Macroeconomics Unit 3 Progress Check National Income and Price Determination walkthrough.
AP Macroeconomics Unit 3 is national income and price determination — the aggregate demand and aggregate supply model at the heart of the course. This walkthrough covers what the Unit 3 Progress Check MCQ tests, the graph traps, and how to reason through them. Explanations only — no AP Classroom answer keys.
What Unit 3 covers
Unit 3 is National Income and Price Determination. National income and price determination is roughly 17–27% of the AP Macroeconomics exam — the heaviest unit.
The Progress Check MCQ: what each question type tests
These are the question patterns that recur on this Progress Check, and what each one is really asking.
The Progress Check FRQ
Unit 3 free response almost always requires a correctly labeled AD-AS graph and a chain of reasoning. Points come from drawing the right curve shifting the right way, labeling equilibrium price and output, computing a multiplier effect, and explaining the consequence for output, unemployment, and the price level.
Where students lose the most points
How to work through this unit
Before drawing anything, decide which curve a change affects — AD, SRAS, or LRAS — and in which direction. Nearly every Unit 3 error is shifting the wrong curve.
Once you have finished the Progress Check, put your raw score into our AP Macroeconomics Calculator to see roughly where that pace puts you on the 1–5 scale, and use the AP Macroeconomics Review for the full exam format and study plan.
Frequently asked questions
Quick answers — written by humans, not a chatbot.
What does the AP Macroeconomics Unit 3 Progress Check cover?
National income and price determination: aggregate demand, short-run and long-run aggregate supply, macroeconomic equilibrium and output gaps, the multiplier, fiscal policy, and self-correction.
What is the spending multiplier?
It is 1 divided by 1 minus the marginal propensity to consume, and it measures how much total spending changes from an initial change in spending. The tax multiplier is smaller and works in the opposite direction.
What is the difference between a recessionary and an inflationary gap?
A recessionary gap exists when equilibrium output is below full-employment output, and an inflationary gap exists when equilibrium output is above it.
Do you publish AP Macroeconomics Unit 3 answer keys?
No. We publish walkthroughs of the reasoning and the traps rather than AP Classroom answers.