What Money Does That Swapping Cannot
A 45-minute Grade 3 lesson on the three jobs money does that direct exchange cannot manage.
What Money Does That Swapping Cannot is a free 45-minute Grade 3 to Grade 5 social studies lesson plan for Common Core standard D2.Eco.5.3-5 — explain what money does that swapping goods cannot. It is timed across 5 sections, gives the exact wording to use where the wording carries the mathematics, names 3 misconceptions with the teaching move that addresses each, and ends with an exit ticket and a printable worksheet with its answer key.
- Grade:
- Grade 3 to Grade 5
- Length:
- 45 minutes
- Standard:
- D2.Eco.5.3-5
Grade 3 to Grade 5 · Economics
D2.Eco.5.3-5
Explain the role of money in making exchange easier.
Objective
Students will be able to explain what money makes possible that swapping goods directly does not.
Students are successful when they can
- Explains why both sides no longer need to want each other's goods.
- Says how money lets prices be compared.
- Says why money can be saved when goods cannot.
What you need
- The toll table and the timetable, both priced
- Swap cards: corn, plough, barrels, cloth
- The printable practice sheet linked at the end of this plan
The lesson
Warm-up — the swap that fails
5 min- The farmer wants a plough. The smith does not want corn. Ask what happens.
- Let the class try to fix it by finding a third person.
Teach — three jobs
15 min- Job one: with money, both sides no longer have to want what the other has.
- Job two: comparison. Show the toll table. Coal 2 pence, stone 1 penny. Same units, comparable.
- Ask how you would compare a swap of corn for barrels. You cannot, easily.
- Job three: storing. Coin keeps its value while corn rots.
- Ask what money needs to work at all: enough people accepting it.
- Point at the printed fares as job one and job two working together.
“Which of money's three jobs is this doing?”
Guided practice — three columns
13 min- Pairs take six situations and say which job of money each shows.
- They write out one swap that fails and how money rescues it.
- Groups compare and settle any situation showing two jobs.
Independent practice
9 min- Students complete the 'What Money Does That Swapping Cannot' page.
- Check the answer names a job, not just 'money is easier'.
Close
3 min- Ask which job of money matters most to a boatman paid in coin.
What goes wrong, and why
Each of these is a reasoning error rather than carelessness. The fix addresses the reasoning.
Says money is better because it is smaller.
Why: Portability is the obvious advantage.
Fix: Portability helps, but the failed swap was about wanting, not carrying.
Thinks money has value in itself.
Why: Coins look valuable.
Fix: It works because enough people accept it. Ask what happens when they stop.
Thinks swapping never worked.
Why: The failed example is the memorable one.
Fix: It works when both sides want what the other has. Money widens the cases, it does not replace them.
If they are not there yet
- Three situations and two jobs.
- Act out the failed swap with cards.
If they finish early
- Find a case today where people still swap directly.
- Explain why the toll table could not have been written for a swap economy.
- Say which job of money a savings club depends on.
Exit ticket
The farmer wants a plough and the smith does not want corn. What does money solve here?
What to look for: The farmer sells corn to anybody and pays the smith in coin. Answers about coins being light mean the wanting problem is unaddressed.
Printable practice for D2.Eco.5.3-5
Free to print and copy, answer key included. Each sheet can generate a fresh set of problems for a retake.
- What Money Does That Swapping CannotCircle the best answer.
Questions about What Money Does That Swapping Cannot
How long does the What Money Does That Swapping Cannot lesson take?
45 minutes, split across 5 timed sections: warm-up 5 min, teach 15 min, guided practice 13 min, independent practice 9 min, close 3 min. The minutes are stated per section and add up to the stated length, so the plan can be cut or extended at a section boundary rather than abandoned halfway.
Which standard does What Money Does That Swapping Cannot teach?
D2.Eco.5.3-5 — D2.Eco.5.3-5, Economics for Grade 3 to Grade 5: “Explain the role of money in making exchange easier.” In plain terms, explain what money does that swapping goods cannot.
What do I need to teach this lesson?
The toll table and the timetable, both priced, swap cards: corn, plough, barrels, cloth and the printable practice sheet linked at the end of this plan. Everything listed is either ordinary classroom equipment or a free printable from this site — there is nothing to buy and nothing to prepare beyond photocopying.
What mistakes should I expect in this lesson?
Three, each a reasoning error rather than carelessness: says money is better because it is smaller; thinks money has value in itself and thinks swapping never worked. The plan gives the thinking behind each one and the teaching move that addresses the thinking rather than the symptom.
How do I know whether the lesson worked?
The exit ticket asks: “The farmer wants a plough and the smith does not want corn. What does money solve here?.” The farmer sells corn to anybody and pays the smith in coin. Answers about coins being light mean the wanting problem is unaddressed. That tells you whether the class needs a reteach or a thirty-second conversation before you plan tomorrow.
Is there a worksheet to go with What Money Does That Swapping Cannot?
Yes — 1 printable D2.Eco.5.3-5 worksheet, linked at the end of the plan and free like the rest of the site. Each one comes with an answer key and 25 versions, so the practice after the lesson can be a different paper on every desk.
Is What Money Does That Swapping Cannot free to use?
Yes. The plan, its printables and their answer keys are free to read, print and photocopy for your own class, with no account and no email capture. It was last reviewed on 7 September 2026. Please do not resell it or republish it as your own.
Last reviewed 2026-09-07. Aligned to D2.Eco.5.3-5 of the C3 Framework for Social Studies State Standards.