merıt
Exam Sprint Sign in
HomeQuick lessonsCoursesAsk Merit AITutorsMerit Tutors' Videos

Study tools

Tonight's planPlusExam SprintMy schedulePlusProgressPlus

Exam Sprint

Your exam, planned day by day.

Free diagnostic in 10 minutes.

Know what to study tonight. Merit Plus suggests videos for what you're learning in class. Free for your first month.

Sign in to save lessons, track topics, and get a study plan.

Sign in
Popular courses AP Calculus BCAP United States HistoryAP Physics 1: Algebra-BasedAP Computer Science AAP Environmental ScienceAP PrecalculusAP Statistics

Top channels

Khan AcademyFiveableHeimler's HistoryThe Organic Chemistry TutorCrashCourseMichael Porinchak - AP Statistics & AP PrecalculusMr. Sinn
PricingFor teachersHow ranking worksAbout Merit

AboutPrivacyTerms

Videos play on YouTube. AP® and SAT® are trademarks of the College Board, which is not affiliated with Merit.

© 2026 Merit

HomeCoursesAsk AITutorsPlanSprintYou

Jason Welker

@jasonwelker· 102K subscribers· 10 lessons on Merit· 8 topics

AP Macroeconomics · AP Microeconomics

View on YouTube
14:02

Measuring GDP using the Income Approach and the Expenditure Approach - HD

Jason Welker

466K views on YouTube · 14 years ago

AP Macro · GDP and How It's Measured
14:12

Scarcity, Opportunity Cost and the PPC

Jason Welker

398K views on YouTube · 14 years ago

AP Macro · Scarcity, Opportunity Cost, and the PPC
20:31

Monopolistic Competition

Jason Welker

339K views on YouTube · 14 years ago

AP Micro · Monopolistic Competition
8:09

Total and Marginal Utility

Jason Welker

297K views on YouTube · 9 years ago

AP Micro · Marginal Analysis and Utility
14:11

Introduction to Pure Monopoly

Jason Welker

211K views on YouTube · 14 years ago

AP Micro · Monopoly
8:26

Labor Markets - Change in in Equilibrium Wage Rate and Level of Employment

Jason Welker

128K views on YouTube · 9 years ago

AP Micro · Labor Markets and MRP
10:52

The MPC, the MPS and the Keynesian spending multiplier

Jason Welker

125K views on YouTube · 8 years ago

AP Macro · The Multiplier
9:35

Relationships between a Firm's Short-run Costs of Production

Jason Welker

100K views on YouTube · 14 years ago

AP Micro · Short-Run and Long-Run Costs
13:20

Every AP MICRO graph (25!!) explained in 12 minutes!!

Jason Welker

75K views on YouTube · 8 years ago

5:00

Labor Supply and Equilibrium in Labor Markets

Jason Welker

17K views on YouTube · 8 years ago

AP Micro · Labor Markets and MRP