What does my child actually write?

The whole new sentence on the line under the kernel, capital to period. The answer key shows the model sentence, so checking is a glance.

Why start from a kernel instead of writing from scratch?

A kernel removes the blank-page problem. Your child spends the effort on the growing part, which is exactly the skill first grade writing needs next.

1st grade expanding sentences

1st grade expanding sentences worksheets

Expanding sentences worksheets for first grade start with a tiny sentence like The dog barked, plus one growth word in parentheses. Your child writes the bigger sentence on the line. It is the first step from writing short sentences to writing interesting ones.

Free printable PDF worksheet, aligned to Common Core L.1.1.j.

Each print is a different sheet with its own answer key. You don't need to sign up.

The kind of sentences you'll fix

Make each sentence grow: add the words in parentheses. Write the new sentence on the line.

Lily jumped. (ten times)
Fixed: Lily jumped ten times.
The drum boomed. (so loudly)
The bunny ate. (a small carrot)

Every print pulls a new set of sentences at this level, so a make-up test or a second sibling gets a different mix.

What's on a 1st grade sheet

1st grade sheets draw from 60 sentences, 6 to a page. All 60 are on 2nd grade sheets too, along with 60 more. 2nd grade sheets print 7 to a page.

A few of the sentences, as the answer key corrects them:

Diego built a tall tower.
The moon glowed over the barn.
A boat floated by the dock.

Fix it. Make each sentence grow: add the words in parentheses. Write the new sentence on the line. 6 sentences to fix per page.

Every version prints on US Letter or A4, with its answer key on the last page.

How to teach this

Read the kernel aloud, then the growth word, then ask where it sounds best. Almost always the answer is at the end, and hearing it beats explaining it. Celebrate the before and after: two words became five, and the sentence got a picture in it.

Watch for: Kids copy the kernel and forget the new words. Have them touch each parenthesis and check it made it into the sentence before moving on. Kids drop the period when the sentence grows. The end mark moves to the END of the new sentence; nothing gets to trail after it.

Common questions about 1st grade expanding sentences

What does my child actually write?: The whole new sentence on the line under the kernel, capital to period. The answer key shows the model sentence, so checking is a glance.
Why start from a kernel instead of writing from scratch?: A kernel removes the blank-page problem. Your child spends the effort on the growing part, which is exactly the skill first grade writing needs next.

Related worksheets

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Aligned to Common Core L.1.1.j. Reviewed by the One more sheet team. Content version 241, updated August 2026.

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