Unit 2, Lesson 1

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Banking Architecture: Retail vs. Credit Unions vs. Online

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Preparation

Lesson

Materials

Preparation

Prep

Lesson Narrative

In this lesson, students explore the structural differences between Retail Banks, Credit Unions, and Online Institutions through mathematical modeling. Students will calculate the impact of APY, maintenance fees, and overdraft penalties on various account balances to discover how profit models (for-profit vs. member-owned) directly impact consumer wealth. By the end of the lesson, students will debate real-world scenarios and defend the most appropriate banking architecture for different consumer profiles.

Learning Goals

• Compare and contrast the business models of retail banks, credit unions, and online banks. • Calculate the net financial impact of APYs versus maintenance fees over a 12-month period. • Evaluate trade-offs between physical accessibility, fee structures, and interest rates.

Student Facing Lesson Objective

• Let's calculate how different bank structures either cost us money or make us money.

Student Facing Learning Targets ("I Can" Statements)

• I can calculate the net gain or loss of a bank account after factoring in fees and interest. • I can explain the structural difference between a retail bank, a credit union, and an online bank. • I can defend a banking recommendation for a specific consumer profile.

Required Academic Standards

View State Standards

National Jump$tart Standards: • Planning and Money Management (Standard 4): Evaluate financial institutions and the services they provide.

Glossary Entries

Retail Bank: A for-profit institution that answers to shareholders. Credit Union: A non-profit, member-owned financial cooperative. Online Bank: An institution that operates entirely on the internet with zero physical branches. Annual Percentage Yield (APY): The real rate of return earned on a deposit over a year. Maintenance Fee: A monthly charge levied by a bank for keeping an account open.

Lesson

Warm Up

2.1.1: The Banking Corners Launch: "Four Corners" Activity. Label corners: A (Under the mattress/cash safe), B (A Big Retail Bank like Chase/BoA), C (A Local Credit Union), D (Payment Apps like Cash App/Venmo). Have students physically walk to the corner where they currently keep most of their money. Synthesis: Give groups 2 minutes to defend their choice to the class. Establish the baseline: Where you keep your money matters. If it's cash, it loses value to inflation. If it's a bank, they use your money to issue loans.

Student Facing Task

Student-Facing Task: Four Corners: Walk to the corner of the room that matches where you currently store your money. • Corner A: Cash in a room/safe • Corner B: Big Retail Bank • Corner C: Local Credit Union • Corner D: Payment Apps (Venmo/Cash App) Discuss with your group: Why do you trust this place with your money, and do they pay you anything to keep it there?

Activity 1

2.1.2: The Unit Economics of Banking Launch: Keep students at their whiteboards. Project the banking data. Give groups 8 minutes to run the math. Synthesis: Have the class observe the boards. (Teacher Key: Apex = $456.30. Credit Union = $603.00. CloudBank = $627.00). Ask: "Why did Marcus LOSE money at MegaBank?" Explain how Retail banks answer to Wall Street (maximizing fees), Credit Unions answer to members (lower fees), and Online Banks pass their lack of real estate costs to the consumer via high APY.

Student Facing Task

Student-Facing Task: Meet Marcus. He has exactly $600 to deposit and leaves it alone for exactly one year. He is comparing three real types of banks. Calculate his final balance after one year at each institution. (Use simple interest: Balance × APY). • Apex MegaBank (Retail Bank): Offers 0.05% APY. Charges a $12 monthly maintenance fee (Fee is waived if your balance stays above $1,500). • Hometown Credit Union (Member-Owned): Offers 1.5% APY. Charges $0 monthly maintenance fee. Charges a $3 fee if you use an out-of-network ATM (Assume Marcus uses an out-of-network ATM twice this year). • CloudBank (Online Bank): Offers 4.5% APY. Charges $0 monthly maintenance fee. No physical branches, no cash deposits allowed. 1. Calculate Marcus's final balance at Apex MegaBank. Show your math. 2. Calculate Marcus's final balance at Hometown Credit Union. Show your math. 3. Calculate Marcus's final balance at CloudBank. Show your math.

Activity 2

2.1.3: The Trade-Off Debate Launch: Present the profiles. Give the whiteboard groups 5 minutes to assign each profile to the correct bank and run Sam's calculation. Synthesis: Facilitate a class debate. (Key: Elena must use the Credit Union or Retail bank because Online banks cannot accept physical cash. Jordan needs the Retail MegaBank for global infrastructure. Sam needs the Online Bank). Have a group reveal Sam's math: $5,000 at 4.5% = $225. $5,000 at 0.05% = $2.50. Sam makes $222.50 more by choosing online.

Student Facing Task

Student-Facing Task: Match the consumer to the correct bank from Activity 1. Write down your mathematical or logical justification. • Profile A (Elena): A waitress who brings home $200 in physical cash tips every weekend. She needs a place to deposit this cash safely. • Profile B (Jordan): An entrepreneur who travels internationally 4 times a year and needs a massive global ATM network and 24/7 corporate support. • Profile C (Sam): Has $5,000 saved for an emergency fund. Sam never visits a physical bank branch and does all banking on a smartphone. 1. Which bank is the only logical choice for Elena? Why? 2. Which bank is best for Jordan? Why? 3. Which bank is best for Sam? Calculate exactly how much more money Sam makes in one year by choosing CloudBank over Apex MegaBank for his $5,000.

Lesson Synthesis

Lesson Synthesis (5 min) Narrative: Bring the class back to their seats. Review the student-facing learning targets. Ask the class to summarize the ultimate trade-off in banking: "If your primary goal is to avoid maintenance fees and earn the highest APY, what convenience are you forced to sacrifice?" (Answer: Physical branch access and easy cash deposits).

Cool Down

2.1.4: The Profit Motive Narrative: This exit ticket serves as a formative assessment to ensure students connect the mathematical outcomes to the institutional structure. Teacher Rubric: A successful response must mention overhead costs—specifically that online banks do not have to pay for physical real estate (buildings, utilities) or branch tellers, allowing them to pass those savings to the customer in the form of higher interest rates.