Are We in a Recession Lesson Plan High School Economics Indicators Activity Quiz Recession lesson plan high school economics — NBER's three-Ds rule vs the two-quarter rule, yield curve and leading indicators, guided notes, activity, Google Forms quiz. Classroom HookEvery time the economy wobbles, students hear arguing pundits saying "we're in a recession" and "no we're not" in the same hour. This lesson clears it up. Students learn the actual NBER definition (depth, diffusion, duration), the pop