Sentence Level First: Building a Complete Sentence

By Laura Lurns · Reviewed by Philip Weaver · Last reviewed 2026-10-23

How to build a complete sentence

A US federal guide on teaching elementary writing came out in 2012 (Graham and colleagues). It was written for classroom teachers, from kindergarten to sixth grade. A panel wrote it.

In plain words, a fragment is a piece of a sentence. It is missing a part, such as who did it or what happened.

Start with talk. This step is for a child just starting to write. The guide says to write down their spoken ideas as sentences. Then show them where each sentence ends.

Split long strings. Some children run many ideas together. The guide says to break those ideas into separate sentences.

Then the guide gives three activities.

• Sentence frames. A frame is a sentence with gaps, like I like to ___ and ___. The adult shows how to fill it in. The child uses it and shares it. Then the frame fades away.
• Sentence expanding. Start from a short sentence. Add words to it, so it tells more. Put in capitals and punctuation as you go.
• Sentence combining. Join short sentences into one. The guide's example is My dog is brown. My dog is big. Try a few joined versions. Then talk about which one sounds better.

The order is the panel's advice. We hold no study that compares one order with another.

The guide says to judge a sentence on three things. Does it make sense? Does it sound good? Is it correct?

The guide also says to practice these skills in the child's own writing. That means while they draft, and while they revise.

What the guide's evidence covers

The guide is the source for every step under "How to build a complete sentence." It is not a guide to dysgraphia. It is about writing lessons in class. Nothing in the guide tests Learning Success.

The guide grades its advice on handwriting, spelling, sentences and typing together. The grade is moderate. That grade is for the advice as a whole, not for each step in it. Two of its studies tested sentence building. Both were small, and both were in grade 3 or 4.

In one, fourth graders worked in pairs, one stronger writer and one weaker. They practiced joining sentences in their own writing. The comparison group had usual grammar lessons on parts of speech. The guide reports that both writers in each pair built better sentences. It reports that their writing got better overall too. We have not read that study ourselves.

The other study, the guide reports, taught the rules of written English as children wrote. Its children were in grade 3 or 4 too. We have not read it either.

The guide reports one more small study, of a different kind from those two. It tested joining sentences, with help from classmates. It found better writing, but no change in how sentences were built.

In the guide's studies, handwriting and spelling practice helped those skills, but no evidence showed better writing overall. Few of them checked writing overall. The panel still thinks the practice helps.

The same guide rates teaching writing strategies step by step as strong. Our page on essay structure has more on how to plan.

What the guide does not show

The guide's two studies of building sentences were both small. Both were in grade 3 or 4.

The guide does not cover parents teaching writing at home.

Grammar and punctuation, inside real writing

The guide's panel warns that grammar on worksheets can be cut off from a child's real writing. It advises teaching grammar inside the child's own drafts. That is the panel's advice.

In the guide's steps, capitals and punctuation come in as a sentence grows. In our view, use the sentence your child just wrote. Fix one thing in it, together.

How we would do it at home

The home routines on this page are ours. We hold no study of parents teaching sentences at home.

Say it first. Ask your child to tell you one thing about their day. Write down what they say as one sentence.

Find the end. Read it back. Add the period together.

Use a frame. Try Today I ___ and ___. Fill it in once yourself. Then let your child fill it in. Later, try it without the frame.

Make it longer. Take a short sentence, like The cat sat. Ask where it sat, or which cat. Add those words. Then check the capital and the period.

Join two. Write two short sentences about one thing. Join them in two ways. Read both out loud. Ask which one sounds better.

When to ask for help

Each of these is a reason to ask for help on its own.

• Little change, even with steady practice and good teaching.
• Writing well below your child's other schoolwork.
• A teacher who raises a concern about writing.
• Extreme upset about writing.
• Complete avoidance of writing.
• Hopelessness about learning.
• Sadness or worry that lasts.
• Significant delays in speech, language or motor development.
• A skill that was there and has gone. Our position is that a lost skill goes to a doctor first, not a tutor.

If no skill has gone, start with the teacher. Say what you are seeing at home, and what you have tried. Beyond the teacher, the right person depends on what it turns out to be about. If the work is too hard, someone who works on that school skill. If worry or mood is the thing, someone who works with children's mental health. In our view, delays in speech, language or movement are worth raising with your child's doctor. In our view, if you are worried enough to ask, a professional evaluation is worth asking about.

Any talk of hurting themselves is a same-day call to your doctor or a crisis line.