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What Happened First?

A 40-minute Grade 1 lesson on sequencing events that happen across a week rather than a morning.

What Happened First? is a free 40-minute Kindergarten to Grade 2 social studies lesson plan for Common Core standard D2.His.1.K-2 — put several events in the order they happened. 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.1.K-2

Kindergarten to Grade 2 · History

D2.His.1.K-2

Create a chronological sequence of multiple events.

Objective

Students will be able to order four events and say what makes the order necessary.

Students are successful when they can

  • Orders four events.
  • Says what depends on what.
  • Spots an order that could vary.

What you need

  • Event cards for local processes
  • A washing line and pegs
  • The printable practice sheet linked at the end of this plan

The lesson

Warm-up — bin day

5 min
  1. Peg four stages of bin day in order.
  2. Ask what would break if two were swapped.

Teach — necessary order and free order

13 min
  1. Order borrowing a book. Every step depends on the one before.
  2. Then take setting up the fair: two stalls can be set up in either order.
  3. Say the Grade 1 addition: some orders are forced and some are free.
  4. Mark the forced steps on the line.
  5. Ask which kind bin day is.
“Those two could swap and nothing breaks. These two could not.”

Guided practice — order and mark

12 min
  1. Pairs order two sets of four.
  2. They mark which steps are forced.
  3. They find one pair that could swap.

Independent practice

8 min
  1. Students complete the ordering page.
  2. Read each set aloud.

Close

2 min
  1. Take one forced pair and say why.

What goes wrong, and why

Each of these is a reasoning error rather than carelessness. The fix addresses the reasoning.

Thinks every order is forced.

Why: Ordering tasks usually have one answer.

Fix: Find a pair that could swap. Noticing that is a real distinction.

Orders by which step is most important.

Why: Importance is a stronger feeling than sequence.

Fix: Ask what has to exist before the next step can happen.

Muddles the middle.

Why: The ends are memorable.

Fix: Work inwards from both ends aloud.

If they are not there yet

  • Three events rather than four.
  • Give the first and last.

If they finish early

  • Order six events across a month.
  • Find two events that happened at the same time.
  • Say what would happen if a forced pair were swapped.

Exit ticket

Order these and mark one pair that could swap without breaking anything.

What to look for: A correct order plus a free pair identified. All-forced means the swap question needs asking.

Printable practice for D2.His.1.K-2

Free to print and copy, answer key included. Each sheet can generate a fresh set of problems for a retake.

Questions about What Happened First?

How long does the What Happened First? 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 What Happened First? teach?

D2.His.1.K-2 — D2.His.1.K-2, History for Kindergarten to Grade 2: “Create a chronological sequence of multiple events.” In plain terms, put several events in the order they happened.

What do I need to teach this lesson?

Event cards for local processes, a washing line and pegs 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: thinks every order is forced; orders by which step is most important and muddles the middle. 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: “Order these and mark one pair that could swap without breaking anything.” A correct order plus a free pair identified. All-forced means the swap question needs asking. 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 Happened First??

Yes — 1 printable D2.His.1.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 What Happened First? 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.1.K-2 of the C3 Framework for Social Studies State Standards.