
Four sessions on the least intuitive idea in economics — and the policy argument that never ends.
Corbin Falls is better at producing both apples and chairs than Millbrook. Trading with Millbrook anyway leaves both towns better off. That sounds wrong until the arithmetic is in front of you, and the unit works it fully.
Then the tariff: what it actually does to prices, to local producers, to buyers, and to the specific people on each side. Your student argues both, scored on how fairly each case is made.
Worth doing the Lesson 1 numbers yourself first. Comparative advantage catches most adults out too.
Written by a licensed K-12 business teacher with more than thirteen years in the classroom. Built to be taught by a parent with no background in the subject.



