Countable or Arguable?
A 50-minute Grade 4 lesson on using the fact-opinion distinction to judge how far a source can be trusted.
Countable or Arguable? is a free 50-minute Grade 3 to Grade 5 social studies lesson plan for Common Core standard D3.2.3-5 — use the difference between fact and opinion to judge whether sources can be trusted. 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:
- 50 minutes
- Standard:
- D3.2.3-5
Grade 3 to Grade 5 · Evaluating Sources and Using Evidence
D3.2.3-5
Use distinctions among fact and opinion to determine the credibility of multiple sources.
Objective
Students will be able to sort statements by whether they can be checked, and say what that means for trust.
Students are successful when they can
- Sorts statements into fact and opinion.
- Names how a fact could be checked.
- Says a source can be trusted on some things and not others.
What you need
- Twelve statement cards from the region's sources
- Two headings: fact / opinion
- The printable practice sheet linked at the end of this plan
The lesson
Warm-up — check this one
5 min- Read 'the mill district held 11,200 people in 1891' and ask how to check it.
- Read 'the wage cut was unavoidable' and ask the same.
Teach — the checking test, and its limit
17 min- Name the test: a fact can be checked against a record, an opinion cannot.
- Sort four cards together, naming the record that would check each fact.
- Take the hard case: 'trade is poor and cotton is dear' is offered as fact and given no figures.
- Say why that matters: a checkable claim with no way to check it is a claim on trust.
- Take 'the mills made the region': an opinion, held by a published historian.
- Say the crucial thing: an opinion is not a lie. It is a different kind of sentence.
- Draw the trust conclusion: trust a source on what it is placed to know and has shown.
“What would you have to look at to check this?”
Guided practice — sort twelve
15 min- Pairs sort twelve statements.
- For four facts, they name the record that would check it.
- Groups find a statement offered as fact that cannot be checked, and say what to do about it.
Independent practice
10 min- Students complete the 'Countable or Arguable?' page.
- Watch for opinions sorted as facts because they are widely held.
Close
3 min- Ask which source has the highest ratio of checkable statements.
What goes wrong, and why
Each of these is a reasoning error rather than carelessness. The fix addresses the reasoning.
Sorts by whether they agree with it.
Why: Agreement feels like truth.
Fix: Ask how you would check it. That test does not care what you think.
Thinks opinions make a source untrustworthy.
Why: Opinion sounds like unreliability.
Fix: The circular's figures are checkable and its judgements are not. Trust it accordingly.
Treats any number as a fact.
Why: Numbers look objective.
Fix: Ask who counted and how. Checkable is not the same as correct.
If they are not there yet
- Six statements, three of each kind.
- Give the check and ask which statement it tests.
If they finish early
- Find a statement offered as fact that nobody can check.
- Rewrite an opinion so that it becomes checkable.
- Say which source you would trust most, and on what.
Exit ticket
Sort these: 'the relief fund held 340 pounds' and 'the wage cut was unavoidable'. How would you check the first?
What to look for: Fact and opinion, with the union's own accounts as the check. Sorting the second as fact means the checking test needs another run.
Printable practice for D3.2.3-5
Free to print and copy, answer key included. Each sheet can generate a fresh set of problems for a retake.
- Countable or Arguable?Sort each sentence into fact or opinion.
Questions about Countable or Arguable?
How long does the Countable or Arguable? lesson take?
50 minutes, split across 5 timed sections: warm-up 5 min, teach 17 min, guided practice 15 min, independent practice 10 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 Countable or Arguable? teach?
D3.2.3-5 — D3.2.3-5, Evaluating Sources and Using Evidence for Grade 3 to Grade 5: “Use distinctions among fact and opinion to determine the credibility of multiple sources.” In plain terms, use the difference between fact and opinion to judge whether sources can be trusted.
What do I need to teach this lesson?
Twelve statement cards from the region's sources, two headings: fact / opinion 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: sorts by whether they agree with it; thinks opinions make a source untrustworthy and treats any number as a fact. 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: “Sort these: 'the relief fund held 340 pounds' and 'the wage cut was unavoidable'. How would you check the first?.” Fact and opinion, with the union's own accounts as the check. Sorting the second as fact means the checking test needs another run. 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 Countable or Arguable??
Yes — 1 printable D3.2.3-5 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 Countable or Arguable? 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 D3.2.3-5 of the C3 Framework for Social Studies State Standards.