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What Makes a Sentence

A 40-minute Grade 1 lesson on the capital and the end mark that bracket a sentence, and on what each one tells a reader to do.

What Makes a Sentence is a free 40-minute Grade 1 English lesson plan for Common Core standard RF.1.1 — know that a sentence starts with a capital and ends with a mark that tells you how it ends. 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 1
Length:
40 minutes
Standard:
RF.1.1

Grade 1 · Reading: Foundational Skills

RF.1.1

Demonstrate understanding of the organization and basic features of print.

Objective

Students will be able to identify the first word and the end mark of a sentence, and say what each signals.

Students are successful when they can

  • Finds the capital that starts a sentence.
  • Names the end mark and says what it does to the voice.
  • Counts the sentences in a paragraph.

What you need

  • An enlarged paragraph of four sentences
  • Highlighters in two colours
  • The printable practice sheet linked at the end of this plan

The lesson

Warm-up — how many sentences?

5 min
  1. Put up a paragraph. Ask how many sentences are in it.
  2. Take three different answers without settling it.
  3. Ask how they could find out for certain.

Teach — the two brackets

13 min
  1. Highlight the capital at the start of sentence one in green, and its full stop in red.
  2. Do the second one together, then let the class direct the third.
  3. Count the red marks. That is the number of sentences, and it is now certain.
  4. Read the paragraph aloud ignoring every full stop. Let them hear what is lost.
  5. Read it again, pausing properly. Ask what changed.
  6. Then swap a full stop for a question mark and read it again. The voice goes up on its own.
“The full stop is not decoration. It is an instruction to your voice.”

Guided practice — mark it up

12 min
  1. Pairs highlight the capitals and end marks in a new paragraph.
  2. They then read it aloud to each other, obeying every mark.
  3. Ask them to count the sentences and compare with another pair.

Independent practice

8 min
  1. Students complete the sentence-features page.
  2. Read each question aloud.

Close

2 min
  1. Put up a paragraph with no punctuation. Ask how many sentences it has.
  2. They cannot know. That is the answer.

What goes wrong, and why

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

Counts lines rather than sentences.

Why: In most of what they read and write, one line holds one sentence, so the two have never been distinguished.

Fix: Use a paragraph where a sentence wraps and another where two sentences share a line. Both cases break the rule visibly.

Puts a capital on any word that looks important.

Why: Capitals mark something special, and the child has generalised from names to importance.

Fix: Reduce the rule to position and category: the first word, plus names, plus I. Importance is not on the list.

Reads straight through the end marks.

Why: The marks are visual and the reading is aural; nothing has connected them.

Fix: Read a paragraph aloud without the pauses and let them hear it fail. The demonstration does what an instruction does not.

If they are not there yet

  • Two sentences rather than four.
  • Give the paragraph with the sentences on separate lines first, then with them run together.

If they finish early

  • Find a sentence in a real book that runs over three lines.
  • Punctuate a paragraph that has had all its marks removed.
  • Explain what an exclamation mark does that a full stop does not.

Exit ticket

How many sentences are in this paragraph? How do you know?

What to look for: Counting end marks, not lines. 'Because there are three lines' is the specific error this lesson exists to catch.

Printable practice for RF.1.1

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

Questions about What Makes a Sentence

How long does the What Makes a Sentence 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 Makes a Sentence teach?

CCSS.ELA-LITERACY.RF.1.1 — RF.1.1, Reading: Foundational Skills for Grade 1: “Demonstrate understanding of the organization and basic features of print.” In plain terms, know that a sentence starts with a capital and ends with a mark that tells you how it ends.

What do I need to teach this lesson?

An enlarged paragraph of four sentences, highlighters in two colours 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: counts lines rather than sentences; puts a capital on any word that looks important and reads straight through the end marks. 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: “How many sentences are in this paragraph? How do you know?.” Counting end marks, not lines. 'Because there are three lines' is the specific error this lesson exists to catch. 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 Makes a Sentence?

Yes — 1 printable RF.1.1 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 Makes a Sentence 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 RF.1.1 of the Common Core State Standards for English language arts.