Public Goods
In a coastal city, a thick fog halts all ships and trade. The townspeople agree they need a lighthouse, but no one wants to pay for it because everyone would benefit for free. A girl named Lyra works with her friend Ella to explain why the lighthouse is a public good—non-excludable and non-rivalrous—and suggests a Harbor Fee so everyone contributes. The community works together and builds the lighthouse, saving the harbor. The book ends with an explanation of public goods and a glossary.
About the Book
In a coastal city, a thick fog halts all ships and trade. The townspeople agree they need a lighthouse, but no one wants to pay for it because everyone would benefit for free. A girl named Lyra works with her friend Ella to explain why the lighthouse is a public good—non-excludable and non-rivalrous—and suggests a Harbor Fee so everyone contributes. The community works together and builds the lighthouse, saving the harbor. The book ends with an explanation of public goods and a glossary.
Prerequisite Requirements
No formal preparation is needed. Curiosity about why some things are shared by everyone and who pays for them is enough to enjoy this story.
Learning Benefits
Introduces young readers to the economic idea of public goods through a concrete story. Encourages discussion about fairness, cooperation, and community responsibility. Builds vocabulary with terms like non-excludable and non-rivalrous.
Structured Knowledge Path
This book sits at the intersection of economics and civics, showing how communities solve collective problems. Adjacent ideas include taxation, government services, and the free-rider problem.
Advancement
Reading this story can prepare children for later lessons on supply and demand, public and private goods, and the role of government. It also develops reasoning about collective action and shared responsibility.
Knowledge Points
- A public good is something everyone can share, like a lighthouse's beam.
- Non-excludable means you can't stop someone from using it, even if they don't pay.
- Non-rivalrous means one person's use doesn't reduce it for others.
- The free-rider problem happens when people enjoy a benefit without helping to pay.
- A solution is for everyone to share the cost, like a Harbor Fee.
Skills
- define-public-good
- explain-shared-cost-solutions
- identify-free-rider-problem
Vocabulary
- Non-Excludable
- Something that cannot be withheld from people, even if they don't pay, like a lighthouse beam.
- Non-Rivalrous
- When one person's use doesn't diminish availability to others, like a lighthouse light.
- Free-Rider Problem
- When people enjoy a benefit without contributing to its cost, risking it never being made.
- Public Goods
- Goods that are shared by everyone and are non-excludable and non-rivalrous.
Reading Guidance for Teachers and Guardians
- Page 4: Ask: Why can't the ships come in? What would help?
- Page 6: Ask: Why does the merchant hesitate? What is the question he asks?
- Page 8: Ask: What does 'free-rider' mean? Why is that a problem?
- Page 10: Ask: What does 'non-excludable' and 'non-rivalrous' mean in this situation?
- Page 11: Ask: How does the Harbor Fee solve the problem?
- Page 13: Ask: What public goods do we have in our town that everyone shares?