Free finance classroom lesson
Students compare a baseline with one operating investment, calculate incremental return and simple payback, test a downside case, and defend a recommendation. No account or student information is required.
A business simulation becomes a finance activity when students evaluate whether a decision uses scarce cash well. Have students compare the decision with a baseline, isolate the extra cost and benefit, calculate a simple return measure, examine liquidity and downside risk, and explain which important cash flows the model leaves out.
Start with the Restaurant Profit Simulator and its printable worksheet, or choose another investment question from the matrix below. The goal is a defensible decision, not simply the highest simulated profit.
Investment match
| Simulation | Finance focus | Investment question | Worksheet |
|---|---|---|---|
| Restaurant | Capacity, cash, incremental profit | Does an operating upgrade earn enough extra profit for the cash committed? | Open |
| Motel | Occupancy, fixed capacity, liquidity | Should cash support room quality, promotion, or operating reserves? | Open |
| Fitness studio | Recurring revenue, equipment, churn | Does added capacity improve member economics after its cost? | Open |
| Auto repair | Bay utilization, equipment, risk | Is a capacity or quality investment justified by added completed work? | Open |
| Bookstore | Inventory cash, turnover, events | Which use of cash produces a stronger return without excessive slow stock? | Open |
| Childcare | Enrollment, staffing capacity, reserves | Can expansion improve operating results while preserving quality and cash? | Open |
Ready-to-use activity
Learning goal: students will compare an operating investment with a baseline using incremental cost, incremental return, simple ROI, payback, liquidity, and downside evidence.
| Measure | Baseline | Investment case | Incremental change |
|---|---|---|---|
| Cash committed to the decision | 0 | ||
| Customers, units, or occupied capacity | |||
| Revenue | |||
| Operating costs | |||
| Profit or net earnings | |||
| Ending cash or cash balance | |||
| Quality, satisfaction, or risk indicator |
Simple ROI:
(incremental return ÷ cash committed) × 100
Simple payback:
cash committed ÷ incremental return per period
Downside return:
incremental return × 0.75
Use these as classroom approximations only when the model reports comparable periods. If the cash commitment or timing is unclear, state that the measure cannot be calculated reliably.
Decision: Recommend invest, revise, wait, or reject.
Incremental evidence: State what extra cash was committed and what extra result followed.
Return: Show simple ROI or payback, including units and time period.
Resilience: Explain the downside result and effect on liquidity.
Limits: Name an omitted cash flow, financing issue, tax, timing difference, or risk that could change the real decision.
Grade the quality of the analysis, not whether the student chooses to invest.
Assign one simulation and one decision. Record baseline and investment-case profit and cash, calculate one return measure, and write a four-sentence recommendation.
Provide the formulas and a partially completed evidence table. Pair a simulation operator with an analyst, and ask students to label every amount with dollars, percentage, or periods.
Compare two competing uses of the same cash, add best/base/worst cases, discuss opportunity cost, or explain why time value of money could change a multi-period decision.
These simulations simplify cash timing, borrowing, interest, taxes, depreciation, replacement costs, working capital, uncertainty, and the time value of money. A profitable model run is not an investment forecast, and a simple ROI or payback calculation does not establish that a real investment is suitable.
Use the activity to practice comparing alternatives and stating uncertainty. Real decisions require verified data, appropriate discount rates and scenarios, legal and tax review where relevant, and qualified advice when stakes are material. Nothing on this page is financial, investment, tax, or legal advice.
Restaurant is an accessible starting point for cash, capacity, and incremental profit. Motel, fitness studio, auto repair, bookstore, and childcare offer different utilization, inventory, recurring-revenue, and reserve questions.
Students practice incremental analysis, simple ROI, simple payback, liquidity, downside scenarios, opportunity cost, and evidence-based recommendations.
The full baseline, investment case, stress test, and recommendation take about 50 minutes. A focused comparison can fit in 25 minutes.
No. Normal simulator and worksheet use requires no account, personal information, or download.
No. They are simplified educational model outputs and should not be used as forecasts or as financial, investment, tax, or legal advice.
Use the accounting lesson to reconcile revenue, costs, and profit; the operations management lesson to diagnose capacity; the economics lesson to examine opportunity cost; or the teacher hub for more lesson formats.