AD-AS Model Classroom Activities for AP Macroeconomics

An AD-AS model activity earns its period if it forces a decision a worksheet never asks for: which curve actually moved, and whether the economy needs a policy response or will find its own way back. Below are six activities built around the three curves, with timings and the debrief question that makes each one land.

See it move

Make it move

The AD-AS model in long-run equilibrium at full-employment output. Tap it to drag the curves, open the full version, or put it on your own site free, or turn it into a five-minute class activity.

A supply and demand diagram has two curves and one outcome to defend. The AD-AS model has three: aggregate demand, short-run aggregate supply, and long-run aggregate supply, plus two policy goals that can pull against each other and a self-correcting mechanism that a static drawing hides completely. A student can shift AD correctly on command and still confuse a supply shock with a demand shock, still forget that LRAS does not move for a one-time event, and still have no answer for why an economy left alone eventually drifts back to potential output. The activities below target those specific gaps rather than general graph practice. Open the AD-AS sandbox at the front of the room; every activity here assumes the class can watch the three curves move rather than imagine it.

1. Predict then reveal, 5 minutes

Put one shock on the screen: consumer confidence jumps, a drought wipes out a harvest, the government cuts income taxes, a wave of new factory construction breaks ground this quarter. Before anyone speaks, every student writes down which curve moves, which direction, and what happens to the price level and real GDP. Only then do you drag the curve in the sandbox and reveal the answer.

The commitment is the whole point. A student who guesses wrong on paper and watches the correct shift remembers it. A student who watches you explain the same shift does not.

Misconception it exposes: moving the wrong curve entirely, most often shifting AD for a story that is actually a cost shock hitting SRAS.

The debrief question: which single word or phrase in the prompt told you which curve to move?

2. The shock sort, with a fifth bin, 15 minutes

Write eighteen to twenty events on slips: a spike in oil prices, a wave of consumer optimism, a jump in the minimum wage, a foreign recession that cuts exports, a new highway system that lowers shipping costs, an increase in immigration that grows the labor force, a breakthrough in factory robotics, a tax rebate check mailed to every household. Students sort each slip into four bins: AD right, AD left, SRAS right, SRAS left.

Then a fifth bin appears on the board: moves LRAS, not SRAS. Events that change the size of the labor force, the capital stock, or the technology available to every firm, permanently, belong here instead of in the short-run bins.

Misconception it exposes: treating every supply-side event as a short-run cost shock, when some events change what the economy can produce at full employment and never shift back.

The debrief question: the jump in the minimum wage and the breakthrough in factory robotics both change production costs, why does one belong in the SRAS bin and the other in the LRAS bin?

3. Headline to graph relay, 20 minutes

Split the class into teams of three standing at separate whiteboards. Read a headline aloud: a central bank raises interest rates, a hurricane destroys refineries along the coast, a major trading partner slips into recession, a state eliminates its corporate tax. The first student on each team sprints to the board and draws a blank AD-AS diagram with all three curves at their starting equilibrium. The second student shifts the one correct curve and marks the new equilibrium. The third student writes what happened to the price level and to real GDP, and names the resulting gap.

Score speed only after accuracy: a fast wrong answer beats no team, but a correct answer scores double. Run four or five headlines back to back.

Misconception it exposes: hesitating between a demand story and a supply story on headlines written to sound ambiguous, which is exactly the skill a multiple-choice exam tests under time pressure.

The debrief question: which headline split your team, and what detail settled the argument?

4. The self-correction timeline, 15 minutes

Draw one shock and freeze it there: a drop in consumer spending shifts AD left, landing the economy in a recessionary gap below LRAS. Ask the class what happens with no policy response at all. Most will say nothing, or that the economy stays stuck.

Now walk it forward in five steps. At each step, wages and input prices fall a little because unemployed workers and idle factories accept lower prices, so SRAS shifts right by a small amount. Students redraw the intersection each step and record the price level and output. By step five, SRAS has slid back enough that output has returned to potential, at a lower price level than where it started. Repeat in reverse for an overheated economy above LRAS, where rising wages push SRAS left until output settles back at potential and prices end up higher.

Misconception it exposes: believing the gap is permanent without government action, or crediting the wrong curve, since SRAS is what corrects a gap that AD or an earlier SRAS shift created.

The debrief question: what variable is actually changing between each step, and why does that make the curve move without anyone deciding to shift it?

5. Be the Fed, 20 minutes

Assign the class one scenario: a recessionary gap from weak investment, or a stagflation case from a spike in input costs. Before any argument starts, every student individually draws the same starting diagram and labels the same gap, so the debate cannot be won by drawing a more convenient picture.

Split into two sides. For a recessionary gap, one side argues for expansionary monetary or fiscal policy to close it quickly, the other argues for waiting on the self-correction mechanism, and each side must state the cost of its own position, not just the benefit. For the stagflation case, split the argument between fighting inflation and fighting unemployment, since one policy tool cannot chase both at once when the two goals point in opposite directions.

Misconception it exposes: treating a policy choice as costless, and in the stagflation round, assuming any policy fixes both problems at the same time.

The debrief question: in the stagflation scenario, why can raising interest rates fix inflation and make unemployment worse at the same time?

6. Build it yourself, 10 minutes

Open the sandbox, hand the controls to one student, and let the class direct the moves out loud. Shift AD left. Now shift it back further than it started. Now let SRAS drift on its own toward the new long-run equilibrium. Stop when output lands above potential and ask what happens next without a single new instruction.

Unscripted and student-driven, which makes it a strong closer, because the question the class asks next is the exact spot the unit has not yet nailed down.

Misconception it exposes: whatever is left. A class that has internalized the model asks about relative shift sizes; a class that has not asks which curve to move at all.

The debrief question: now that output is sitting above potential with no new shock, what has to happen to wages and input prices before the economy settles back down on its own?

Sequencing

A workable arc across a unit on the AD-AS model: predict then reveal as a warm-up on every new lesson, the shock sort early to separate short-run from long-run supply events, the headline relay once vocabulary is solid to build speed under pressure, the self-correction timeline to teach the mechanism that most textbooks state but never show moving, be the Fed once students can name a gap on sight, and the sandbox to close the unit with student-directed questions. Several of these scenarios, including both self-correction cases and the stagflation shock, already exist as guided graph walkthroughs if a class needs a slower first pass before the live activities.

Pair the activities with the reference material once the room has built the intuition: AD-AS shift combinations turns the shock sort into a complete answer key, and the stagflation explainer backs up the be the Fed debate with the full mechanism. The model itself is taught in the aggregate demand and aggregate supply modules, and full timings and exit tickets for a complete unit sit in the lesson plans library.