Lesson plan · Investing · Lesson 8
Portfolio Basics
Asset allocation in plain English — and how investing differs from speculating.
- 45 minutes
- Grades 9–12
- Intermediate
- Activity: pairs
Objectives
Students will be able to:
- Explain asset allocation
- Describe rebalancing and target-date funds
- Distinguish investing from speculating and spot “guaranteed return” red flags
Materials
- Slide deck and a projector
- Worksheet (one per student)
- Exit ticket slips (bottom of the worksheet)
Standards
- National Standards for Personal Financial Education (2021)
- InvestingManaging Risk
- Texas TEKS §113.76 Personal Financial Literacy and Economics
- (8) The student understands the importance of saving and investing in creating wealth and building assets.
Topic-level alignment by FLC. How we map standards
Key vocabulary
- Portfolio
- All of your investments together.
- Asset allocation
- How your portfolio is divided among types of investments — mainly stocks, bonds, and cash. It's usually the biggest driver of how much a portfolio swings.
- Rebalancing
- Bringing your mix back to its target. If stocks grow faster, they become a bigger share of your portfolio than you planned; rebalancing trims them back.
Background reading
The official sources this lesson is based on.
45-minute agenda
0–5 min
Warm-up
Post: “An ad promises “20% a month, guaranteed.” What questions would you ask before handing over any money?”
Teacher note: Real investments never guarantee high returns. “Guaranteed” plus “high return” is a classic scam signal.
5–17 min
Direct instruction
Present the lesson slides. Make sure students leave with these points:
- Asset allocation drives most of a portfolio's ups and downs.
- Rebalancing brings your mix back to target.
- Target-date funds shift from stocks to bonds over time.
- Speculating ≠ investing.
- Guaranteed returns = red flag.
Use the “See it” slide (Investing vs. speculating) to make the idea visual.
17–22 min
Worked example
Walk through “"20% a month, guaranteed"” on the slides. Pause before the result and ask students to predict it.
22–32 min
Solid, Speculative, or Scam?
Format: pairs · 10 minutes
- Give pairs six pitches: a low-cost index fund; a target-date fund; a friend's “can't lose” crypto coin tip; a stranger promising 5% a week, guaranteed; buying lots of lottery tickets as a plan; a new company's stock you learned about in a video.
- Pairs label each: investing, speculating, or likely scam — and circle the red-flag words.
- Share and build a class list of red flags.
What to look for: Investing: index fund, target-date fund. Speculating: the crypto tip and the single new stock (high risk, uncertain). Likely scam: guaranteed 5% a week. Lottery tickets are gambling. Red flags: “guaranteed,” “can't lose,” pressure, secrecy.
32–37 min
Check for understanding
Use the question slides — or run them as a Four Corners game. Questions:
- What usually drives how much a portfolio swings in value?
- What would rebalancing do?
- What's the right conclusion?
- Day trading is a reliable way for beginners to grow money quickly.
37–42 min
Discussion
- Why do you think investing scams target young people on social media?
- What's the difference between a risky investment and a scam?
42–45 min
Exit ticket
Prompt: Name two differences between investing and speculating.
Differentiation
Common misconception
“Rebalancing means I'm selling my winners, so it's bad.” It keeps your risk at the level you chose.
Support
Draw the 80/20 and 90/10 pies side by side before calculating.
Extension
Design a simple allocation for a 16-year-old investing for retirement and explain it, then one for someone five years from retiring.
Homework or make-up work
Students can complete the full interactive lesson — including its knowledge check — at learnwithflc.org/courses/investing/portfolio-basics. No account needed; progress saves on their device.