Inflation in the Classroom Mini-Economy
You teach seventh-grade economics through a classroom mini-economy. Students earn 'class cash' for completing jobs such as attendance clerk and materials manager, and they bid weekly on homework passes and front-of-line privileges. To reward good behavior, you have been printing extra cash. In three weeks, the price of a homework pass rises from 10 to 40 class dollars. Students begin hoarding cash, some stop bidding, and one student says, 'This is unfair - you're making our money worthless.' You have 25 students, a 40-minute class period, and a state standard that asks students to explain how changes in money supply affect prices. You want the simulation to remain fair and to connect to real-world inflation without turning it into a lecture.
1. How would you diagnose the problem for students, and what policy options would you put on the table?
Read the worked answer
The mini-economy has inflation caused by too much class cash chasing a fixed supply of prizes. When I printed extra cash for behavior, I increased the money supply without increasing the goods students could buy. Prices rose because more dollars competed for the same homework passes. I would explain this with the equation of exchange in simple terms: more money, same output, higher prices.
Policy options include stopping cash printing, imposing a small tax on transactions or holdings, increasing the supply of prizes, or using a lottery rather than bidding. Each has tradeoffs. Stopping printing is simplest but may reduce rewards. A tax can pull cash out but may feel punitive. Increasing prizes costs teacher time. A lottery reduces price signals. I would let students choose a policy and predict effects.
2. How would you connect the simulation to real-world inflation and help students analyze tradeoffs?
Read the worked answer
I would ask students to compare classroom inflation with real inflation: both involve money supply, demand, and supply constraints, though the classroom is a closed economy. A price control on homework passes might keep the posted price low, but shortages or a black market could appear. That tradeoff is valuable.
I would connect to central banks raising interest rates to reduce demand, and to supply-chain shocks. Students would write a short memo to the 'class central bank' recommending a policy and naming one cost. This avoids a lecture and makes the concept concrete.
3. How would you assess whether students understand the causes of the classroom inflation?
Read the worked answer
I would assess with a pre/post question: 'Why did the price of a homework pass rise?' Students would explain in a sentence using money supply and scarcity. I would also collect the policy memo and look for a clear mechanism, a tradeoff, and a real-world connection. A multiple-choice item could ask which policy is most likely to reduce inflation in the mini-economy and why.
I would not grade students on how much cash they earned; that would confuse economic understanding with compliance.