Minecraft
Preparation
Lesson Narrative
Students are introduced to real estate as an investment vehicle. They will calculate property appreciation and dive deep into the mechanics of a mortgage, specifically exploring amortization schedules to see how much of their early payments go to bank interest versus their actual principal balance.
Learning Goals
• Calculate the projected future value of a property using historical appreciation rates.
• Analyze an amortization schedule to determine the true cost of a 30-year mortgage.
• Differentiate between principal, interest, and home equity.
Student Facing Learning Goals
• Let's figure out how much a house really costs when you factor in a 30-year bank loan.
Student Facing Learning Targets
• I can calculate property appreciation over time.
• I can explain why my first mortgage payment is mostly interest, not principal.
• I can calculate my home equity.
Required Academic Standards
National Jump$tart Standards:
• Credit and Debt (Standard 1): Analyze the costs and benefits of various types of credit.
Glossary Entries
Amortization Schedule: A table detailing each periodic payment on an amortizing loan, showing how much goes to principal versus interest.
Principal: The original sum of money borrowed in a loan.
Interest: The cost of borrowing money, calculated as a percentage of the principal.
Equity: The true ownership value of a home, calculated as the Current Market Value minus the Remaining Loan Balance.
Appreciation: An increase in the value of an asset over time.
Lesson
Warm Up
3.11.1: The $300k House
Launch: Have students stand in randomized groups of 3 at vertical whiteboards. Present the prompt verbally or project it. Give them 4 minutes.
Synthesis: Select two groups to share. Establish the baseline: A $300k house often costs over $600k by the time you finish paying the bank's interest over 30 years. Mortgages are incredibly expensive.
Student Facing Task
A family buys a house for $300,000 using a standard 30-year mortgage. When they finish paying off the loan 30 years later, how much total money do you estimate they actually paid the bank (including the principal and the interest)?
Activity 1
3.11.2: The Amortization Shock
Launch: Keep students at whiteboards. Project the amortization data. Give groups 8 minutes to run the calculations.
Synthesis: Have the class observe the boards. (Teacher Key: 1. It only went down $245. 2. The bank wants to guarantee they get their profit first before you pay down your debt). Explain how early mortgage payments build almost zero wealth.
Student Facing Task
Let's look at an "Amortization Schedule." You take out a $300,000 mortgage at a 7% interest rate. Your total monthly payment to the bank is $1,995. In Month 1, $1,750 of that payment goes to Interest, and only $245 goes to Principal.
1. After making your $1,995 payment, how much did your actual $300k debt go down?
2. Why does the bank legally structure the loan so that you pay almost all the interest up front in the early years?
Activity 2
3.11.3: Building Equity vs. Appreciation
Launch: Present the equity scenario. Give the whiteboard groups 8 minutes to calculate the breakdown of wealth.
Synthesis: Facilitate a class debate. (Key: 1. $350k - $280k = $70,000 Equity. 2. $20k came from paying the loan, $50k came from the market going up). Emphasize that in the first decade of owning a home, wealth is primarily built by market appreciation, not by making payments.
Student Facing Task
You bought a house for $300k. Five years later, you have paid down $20k of the principal (so you owe the bank $280k). Also, the housing market went up (Appreciation), and your house is now worth $350k.
1. Calculate your "Equity" (Current Market Value minus Current Debt).
2. Look at your total Equity. How much of your wealth came from you physically paying the mortgage, and how much came from the market naturally going up?
Lesson Synthesis
Lesson Synthesis (5 min)
Narrative: Bring the class back to their seats. Review the student-facing learning targets. Summarize: "When you buy a house, you are taking out massive debt. The wealth comes from time and appreciation, not from the magic of the house itself."
Cool Down
3.11.4: The 15-Year vs. 30-Year
Narrative: This exit ticket serves as a formative assessment on the mechanics of loan terms.
Teacher Rubric: A successful response must articulate that a 15-year loan forces the borrower to pay down the principal much faster, drastically reducing the total amount of interest the bank is allowed to charge over the life of the loan.
Student Facing Task
Based on the amortization math we did today, why does choosing a 15-year mortgage instead of a 30-year mortgage save a homebuyer hundreds of thousands of dollars in interest?