AP ECONOMICS: October 5 (early release) Warm-up C, I, G, or Xn—(1) what causes AD to change when government spending on infrastructure changes? (2) when government transfer payments change? Learning Target: In order to understand how equilibrium national output and price level are determined, I will analyze the nature and shape of the aggregate demand (AD) curve. I will know I have it when I can: (1) explain why the AD curve is downward sloping; (2) explain why the AD curve shifts; and (3) graph changes in AD and on an appropriately labeled AD graph. --Activity 17.2 (HO) Assignment Read Module 18; GC video