Lesson plan · Understanding Businesses · Lesson 3
Reading an Income Statement
Walk through an income statement line by line.
- 45 minutes
- Grades 9–12
- Intermediate
- Activity: pairs
Objectives
Students will be able to:
- Read an income statement from revenue to net income
- Compare two periods for growth and margin trends
- Locate real company filings on the SEC's EDGAR site
Materials
- Slide deck and a projector
- Worksheet (one per student)
- Profit Margin Calculator (projected, or on student devices)
- Exit ticket slips (bottom of the worksheet)
Standards
- National Standards for Personal Financial Education (2021)
- Builds business and economics understanding beyond the six topic areas.
- Texas TEKS §113.76 Personal Financial Literacy and Economics
- (1) The student understands the fundamental concepts of economics.
Topic-level alignment by FLC. How we map standards
Background reading
The official sources this lesson is based on.
45-minute agenda
0–5 min
Warm-up
Post: “A company's sales grew 20%, but its profit fell. What might have happened?”
Teacher note: Costs grew faster than sales — for example, more expensive materials, discounts, or new hires.
5–12 min
Direct instruction
Present the lesson slides. Make sure students leave with these points:
- Income statement = performance over a period.
- Revenue → gross profit → operating income → net income.
- Compare periods: growth and margin trends matter most.
- Real filings are free on the SEC's EDGAR site.
Use the “See it” slide (Trailhead Outfitters: income statement for the year) to make the idea visual.
12–17 min
Worked example
Walk through “What changed since last year?” on the slides. Pause before the result and ask students to predict it.
17–22 min
Live demo
Project build an income statement from the slides or the Profit Margin Calculator. Change one input at a time and have students call out what they think will happen.
22–34 min
Line by Line
Format: pairs · 12 minutes
- Post a two-year statement. Year 1: revenue $500,000, cost of goods $300,000, operating expenses $150,000, interest $5,000, taxes $9,000. Year 2: revenue $600,000, cost of goods $390,000, operating expenses $160,000, interest $6,000, taxes $8,800.
- Pairs calculate gross profit, operating income, and net income for each year.
- Pairs calculate revenue growth, gross margin, and net margin for each year.
- Pairs write two sentences: what improved, and what got worse?
What to look for: Year 1: gross $200,000 (40%), operating $50,000, net $36,000 (7.2%). Year 2: gross $210,000 (35%), operating $50,000, net $35,200 (5.9%). Revenue grew 20%, but gross margin fell, so net income slipped.
34–39 min
Check for understanding
Use the question slides — or run them as a Four Corners game. Questions:
- What time frame does an income statement cover?
- What's the most reasonable first question?
- What is net income?
39–42 min
Discussion
- Pick a public company you know. What would you want to learn from its income statement?
- Why might a company's profit grow faster than its revenue?
42–45 min
Exit ticket
Prompt: An income statement shows performance over a ___. A balance sheet shows a ___.
Differentiation
Common misconception
“Growing sales always means a healthier company.” Check whether margins held up too.
Support
Give pairs a blank statement template with each line's formula written beside it.
Extension
Find a real company's income statement on EDGAR (or its investor relations page) and calculate its gross and net margins.
Homework or make-up work
Students can complete the full interactive lesson — including its knowledge check — at learnwithflc.org/courses/understanding-businesses/income-statement. No account needed; progress saves on their device.