The Likelier Explanation
A 40-minute Grade 1 lesson on choosing between explanations for a local change and giving evidence.
The Likelier Explanation is a free 40-minute Kindergarten to Grade 2 social studies lesson plan for Common Core standard D2.His.16.K-2 — say which of several reasons is the more likely explanation. 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:
- Kindergarten to Grade 2
- Length:
- 40 minutes
- Standard:
- D2.His.16.K-2
Kindergarten to Grade 2 · History
D2.His.16.K-2
Select which reasons might be more likely than others to explain a historical event or development.
Objective
Students will be able to choose the likelier explanation and name the evidence that moved them.
Students are successful when they can
- Chooses one.
- Names the evidence.
- Does not call the other impossible.
What you need
- Reason pairs and a likelihood line
- Local sources
- The printable practice sheet linked at the end of this plan
The lesson
Warm-up — stand on the line
5 min- Read a reason. Children place themselves on the line.
- Ask two of them why they stood there.
Teach — evidence moves you along the line
13 min- Place two reasons for a local change on the line.
- Name the piece of evidence that moved one of them along.
- Say the Grade 1 addition: it is the evidence that moves it, not how much you like it.
- Take a pair the class cannot separate and leave it.
- Say what new evidence would move it.
“What moved it along the line? Point at the source.”
Guided practice — place four pairs
12 min- Pairs place four reason pairs on a paper line.
- For each they name the evidence.
- They find one they cannot separate.
Independent practice
8 min- Students complete the which-reason page.
- Read each pair aloud.
Close
2 min- Take one choice and the evidence behind it.
What goes wrong, and why
Each of these is a reasoning error rather than carelessness. The fix addresses the reasoning.
Calls the less likely reason impossible.
Why: Choosing feels like eliminating.
Fix: A line, not two boxes.
Chooses by interest rather than evidence.
Why: The exciting reason is more appealing.
Fix: Point at the source. Interest is not evidence.
Refuses to choose.
Why: Both are possible.
Fix: Ask which they would bet on, and why.
If they are not there yet
- Two pairs rather than four.
- Give the evidence and choose.
If they finish early
- Place three reasons on one line.
- Say what evidence would reverse your choice.
- Argue for the less likely one.
Exit ticket
Old photographs of the street show no cars. Which is likelier, and what is your evidence?
What to look for: Fewer cars owned, with the photograph as evidence. Calling the other impossible means the line needs restating.
Printable practice for D2.His.16.K-2
Free to print and copy, answer key included. Each sheet can generate a fresh set of problems for a retake.
- The Likelier ExplanationCircle the more likely reason.
Questions about The Likelier Explanation
How long does the The Likelier Explanation lesson take?
40 minutes, split across 5 timed sections: warm-up 5 min, teach 13 min, guided practice 12 min, independent practice 8 min, close 2 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 The Likelier Explanation teach?
D2.His.16.K-2 — D2.His.16.K-2, History for Kindergarten to Grade 2: “Select which reasons might be more likely than others to explain a historical event or development.” In plain terms, say which of several reasons is the more likely explanation.
What do I need to teach this lesson?
Reason pairs and a likelihood line, local sources 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: calls the less likely reason impossible; chooses by interest rather than evidence and refuses to choose. 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: “Old photographs of the street show no cars. Which is likelier, and what is your evidence?.” Fewer cars owned, with the photograph as evidence. Calling the other impossible means the line needs restating. 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 The Likelier Explanation?
Yes — 1 printable D2.His.16.K-2 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 The Likelier Explanation 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.His.16.K-2 of the C3 Framework for Social Studies State Standards.