Jonathan Cleaned Up—Then He Heard a Sound (or Blackberry Subway Jam)
Jonathan has a problem to solve. He has a subway station located in his living room, and the crowds of people make it hard for him to clean his room.
Economic Concepts
- Externalities
- Decision-Making
Grade Levels
- Primary (K-3)

Description of Lesson 12, Jonathan Cleaned Up—Then He Heard a Sound or Blackberry Subway Jam from Economics and Children’s Literature:
Students learn about externalities, and become , looking for them in the school, home, and community.