Minecraft
Preparation
Lesson Narrative
Students analyze the hidden monthly costs of maintaining a household. They will calculate tiered energy rates to understand electricity bills and audit fictional bank statements to hunt for "subscription bloat" (forgotten recurring charges that silently drain cash flow).
Learning Goals
• Analyze a tiered utility bill to calculate electricity costs.
• Identify and eliminate subscription bloat to maximize cash flow.
• Differentiate between fixed and variable household utilities.
Student Facing Learning Goals
• Let's find out how much it actually costs to keep the lights on and the Wi-Fi running.
Student Facing Learning Targets
• I can read a utility bill.
• I can explain how a tiered energy rate works.
• I can find hidden subscription fees on a bank statement.
Required Academic Standards
National Jump$tart Standards:
• Planning and Money Management (Standard 1): Develop a plan for spending and saving.
Glossary Entries
Subscription Bloat: The accumulation of recurring monthly charges for services that are rarely or never used.
Utility: An essential service provided to a house, like water, electricity, or gas.
Kilowatt-Hour (kWh): The standard billing unit for electricity consumption.
Tiered Rate: A pricing system where the cost per unit increases as consumption increases.
Lesson
Warm Up
5.8.1: The Forgotten $10
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: Companies rely on you forgetting to cancel. $10 a month becomes $360 over three years—a massive cost for something never used.
Student Facing Task
Student-Facing Task: You sign up for a "free trial" of a streaming app that requires a credit card. You forget to cancel, and it charges you $10 a month. If you don't notice the charge for 3 years, how much did that "free trial" actually cost you?
Activity 1
5.8.2: The Electric Bill (Tiered Rates)
Launch: Keep students at whiteboards. Project the energy tiers. Give groups 8 minutes to run the calculations.
Synthesis: Have the class observe the boards. (Teacher Key: 500 kWh at $0.10 = $50. Next 200 kWh at $0.20 = $40. Total = $90). Show how turning off the AC or lights prevents you from hitting that expensive upper tier.
Student Facing Task
Student-Facing Task: Your power company uses a "Tiered Rate." The first 500 kWh cost $0.10 each. Anything OVER 500 kWh costs $0.20 each. You use 700 kWh this month.
1. Calculate the cost of the first 500 kWh.
2. Calculate the cost of the remaining 200 kWh.
3. What is your total electric bill?
Activity 2
5.8.3: The Subscription Audit
Launch: Present the fictional bank statement. Give the whiteboard groups 10 minutes to audit the charges.
Synthesis: Facilitate a class debate. (Key: Add the gym, streaming apps, and software subscriptions. Assuming a total of $100/mo = $1,200/year). Discuss how recurring monthly fees are the number one destroyer of wealth for young adults.
Student Facing Task
Student-Facing Task: Review Alex's monthly bank statement. Alex says he has no extra money to save, but he pays for a gym, three streaming apps, and two software subscriptions.
1. Identify every recurring monthly subscription on the statement.
2. Calculate the total dollar amount he spends on these services every single month.
3. If Alex cancels half of them, how much cash does he free up over a year?
Lesson Synthesis
Lesson Synthesis (5 min)
Narrative: Bring the class back to their seats. Review the student-facing learning targets. Summarize: "Utilities fluctuate based on your physical behavior. Subscriptions drain you silently. Audit your accounts every single month to protect your cash flow."
Cool Down
5.8.4: The Phantom Drain
Narrative: This exit ticket serves as a formative assessment on the psychology of automated payments.
Teacher Rubric: A successful response must articulate that auto-pay makes spending frictionless and invisible. If a consumer is forced to manually pay the bill each month, they are confronted with the cost and are much more likely to question the value and cancel the service.
Student Facing Task
Student-Facing Task: Why do streaming companies and gyms strongly prefer that you put your monthly subscription on "Auto-Pay" rather than forcing you to log in and manually pay the bill every month? What is the psychological advantage for the company?