TheLearnDen

Free sentence activity · KS2

Sentence Building

By TheLearnDen's editorial team · Updated 2026-08-08 · Free, no account, works on a phone.

Get a word, then write one sentence that uses it. Two words are harder than one. Three words are hardest of all, because the third is always a joining word — so your sentence has to have two parts for it to join.

Rehearse the whole sentence before writing anything — out loud where that suits the child. Children who compose the sentence first write more, and correct more of it themselves.

This activity needs JavaScript switched on. With it off, the teaching notes below still work with a whiteboard.

Running this in class

  1. One word for Years 3 and 4, two for Year 5, three for Year 6 — or start everyone on one word and move up within the lesson.
  2. Keep the routine: rehearse it, write it, check it. Rehearsal comes first — aloud where appropriate, or in the child's usual way of communicating.
  3. The clock is deliberately switched off by default. Turn it on for a short burst if the class needs urgency, but not for children who freeze under a timer.
  4. Swap whiteboards for the check. Marking someone else's sentence against three criteria gives children another chance to apply them.
  5. In the three-word round, the mark to look for is a real clause on each side of the joining word — not the word bolted onto a phrase.

Questions

What is the three-word round for?

The third word is always a conjunction such as because, although, until or while. To use it correctly the child has to write two clauses and join them, which is the Year 5 and Year 6 expectation for using a range of conjunctions.

Can we use our own words?

Yes. Type any word into the box and the activity will use it, which is useful for tying the sentence work to whatever the class is reading.

Does it need an account?

No. It is free, needs no sign-up and works on a phone, tablet or whiteboard.

The other sentence activities

  • Spot the Mistake

    Find the fault in a sentence, then write a clear, correctly punctuated version.

  • Fronted Adverbials

    Transform a plain sentence with purposeful where, when, how, -ing, -ed and -ly openers.

  • Relative Clauses KS2

    Add a relative clause inside a sentence and place the paired commas correctly.

  • Clauses and Conjunctions

    What the words actually mean: clauses, conjunctions and how sentences join.