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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
Present slidesWorksheet + keyStudent lesson

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)

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.

45-minute agenda

  1. 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.

  2. 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.

  3. 17–22 min

    Worked example

    Walk through “"20% a month, guaranteed"” on the slides. Pause before the result and ask students to predict it.

  4. 22–32 min

    Solid, Speculative, or Scam?

    Format: pairs · 10 minutes

    1. 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.
    2. Pairs label each: investing, speculating, or likely scam — and circle the red-flag words.
    3. 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.

  5. 32–37 min

    Check for understanding

    Use the question slides — or run them as a Four Corners game. Answers:

    1. What usually drives how much a portfolio swings in value? — B. Its asset allocation — the mix of stocks, bonds, and cash
    2. What would rebalancing do? — C. Shift money from stocks back to bonds to return to 70/30
    3. What's the right conclusion? — C. It's almost certainly a scam — real investments don't guarantee returns
    4. Day trading is a reliable way for beginners to grow money quickly. — False
  6. 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?
  7. 42–45 min

    Exit ticket

    Prompt: Name two differences between investing and speculating.

    Answer: Investing is long-term, diversified, and based on businesses' value; speculating is short-term bets on price moves, often concentrated and riskier.

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.