What do the fifteen families add up to?

A decoding toolkit that covers a large share of one-syllable English. A first grader who owns these endings reads new words by analogy (if I can read duck, I can read cluck) which is precisely the skill the phonics standards are building toward.

What comes after word families?

Longer vowel patterns: silent e, vowel teams, and the rest of the phonics ladder. The sorting habit built here transfers directly, and our sight-word sheets make a good companion in the meantime.

1st grade short u word families

1st grade short u word families worksheets

Short u rounds out the vowel set. First graders sort -ug, -ump, and -uck words, handle a two-consonant ending as a single chunk, and see the ck rule one more time, which by now feels like an old friend.

Free printable PDF worksheet, aligned to Common Core RF.1.3.

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

The kind of words you'll sort

Say each word. Write it under its family.

luckmugcluckduglumpyuckhumpjugthumpjumpbuckrug

Columns: -ug and -ump and -uck. "mug" belongs under -ug; "lump" belongs under -ump; "cluck" belongs under -uck.

Every print pulls a new set of words 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 33 words, 15 to a page. Kindergarten and 1st grade print from the same 33 words. What changes is the standard (RF.1.3 here) and the teaching notes below.

Some of the words:

bughugtuglugplugslugclumpduckplucktruck

Sorting. Say each word. Write it under its family. 15 words per page.

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

How to teach this

Close the vowel tour with a little ceremony: five vowels, fifteen families, and a reader who can sort them all. Mixing this sheet with an earlier vowel's sheet makes a strong review, since the columns now compete across vowels, not just endings.

Watch for: The -ump family ends with two consonants; the family chunk keeps them together so children don't decode them separately. Duck and truck end in ck, the usual ending for a k sound after a short vowel.

Common questions about 1st grade short u word families

What do the fifteen families add up to?: A decoding toolkit that covers a large share of one-syllable English. A first grader who owns these endings reads new words by analogy (if I can read duck, I can read cluck) which is precisely the skill the phonics standards are building toward.
What comes after word families?: Longer vowel patterns: silent e, vowel teams, and the rest of the phonics ladder. The sorting habit built here transfers directly, and our sight-word sheets make a good companion in the meantime.

Related worksheets

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Aligned to Common Core RF.1.3. Reviewed by the One more sheet team. Content version 241, updated October 2026.

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