College ~20 hours
Math for Economics: The Toolkit
You do not need to be a mathematician to do economics — but a small, sharp toolkit unlocks most of it. This path teaches exactly the math economists reach for: reading functions, thinking in marginal changes with derivatives, optimizing with constraints, and reasoning with probability. Every technique lands inside an economic application, and calculators check your work. Finish this path and the equations in intermediate micro and macro will read like sentences.
Steps
Step 1: Algebra Refresher
Solving equations and working with ratios — the moves behind every supply-demand calculation.
Step 2: Functions and Graphs
Reading relationships as functions: intercepts, slopes, and shifts — the visual grammar of economics.
Step 3: Derivatives and Marginal Thinking
The derivative is marginal analysis made precise: how much one more unit changes the outcome.
Step 4: Optimization: Finding the Best
Setting marginal benefit equal to marginal cost — the single most-used calculation in economics.
Step 5: Partial Derivatives
Holding other things equal, mathematically: how one input changes output while the rest stay fixed.
Step 6: Integrals: Adding Up
Areas under curves measure total surplus — the integral turns geometry into welfare.
Step 7: Probability Basics
Expected values and risk: the math behind insurance, investment, and decision under uncertainty.
Step 8: Statistics for Economic Data
Means, growth rates, and index numbers — the statistics behind GDP, inflation, and unemployment reports.