No-Prep Sub Plans for Price Formation

You wake up sick, and the last thing you want is to build a substitute plan from a hospital waiting room. The plan below is self-contained: a substitute with no economics background can run it, students stay productively busy for a full period, and the learning genuinely advances your unit on how prices form. It is written for Grades 9–12 and CTE, with timings and student-facing instructions ready to hand over. Leave your sub a printed copy of one reading from the Price Formation – Supply and Demand resource set, and the day runs itself.

What to leave for the substitute

Set your sub up for success with a short, clear packet. Everything they need should fit on one page of notes plus student handouts.

• A one-paragraph overview: today students learn how prices are set by supply and demand.
• The printed reading and a class set of the worksheet described below.
• An answer key so the sub can spot-check without knowing the content.
• A seating chart and your usual behavior expectations.

Substitute script and timings (50 minutes)

Give the sub an exact schedule so there is never a dead moment.

1. Settle and starter (0–8 min): students write a response to the board prompt: “Why does a bottle of water cost more at a concert than at a store?”
2. Read (8–22 min): students read the provided passage silently and underline anything about supply or demand.
3. Worksheet (22–40 min): students complete the questions individually, then check with a neighbor.
4. Share and collect (40–50 min): the sub takes three answers aloud, then collects all work for you.

Student-facing instructions

Print these directly for students so the sub only has to point at them: “Read the passage on your own and underline every sentence about supply or demand. Then answer all worksheet questions in full sentences. When you finish, compare answers with the person next to you and fix anything you disagree on. Be ready to share one answer with the class.” Clear instructions like these remove the guesswork that usually derails a covered lesson.

The worksheet questions

Build the worksheet from these prompts, which need no teacher explanation to answer from the reading:

1. In your own words, what is demand? What is supply?
2. If more people want a product but the amount for sale stays the same, what happens to the price?
3. Give one real example of a price that rose because demand went up.
4. Give one example of a price that fell because supply increased.
5. Explain what a “fair” price means to you, and whether the market always produces one.

Extension if there is time left

Fast finishers rarely get considered in sub plans, so include a bonus that connects to nearby units. Ask early finishers to write a short prediction: how might these prices behave during a downturn, an idea they will meet in the Occupational Safety and Health in the Company unit and again in Collective Agreements and Codetermination. This keeps strong students stretched without any extra effort from the substitute, and it seeds the connections you will draw out when you return.

When you get back

Collecting the work matters—it turns a holding day into real evidence. Skim the worksheets to see who grasped the supply-and-demand relationship and who is still guessing, then open your next lesson by revisiting one worksheet question as a warm-up. That single move signals to students that covered lessons count, which keeps effort high the next time you are out.

Related reading from the Teacher Hub

• Bell Ringers and Warm-Ups for Price Formation
• Assessment Ideas for Market and Market Structures: Rubrics, Quizzes and Exit Tickets
• Project-Based Learning: Occupational Safety and Health in the Company in the Real World