Which short-o family is easiest to start with?

The -op family: hop, top, mop, pop are all words kindergartners can act out, and acting a word out makes it unforgettable. Start there, then add -ot and -ock as the sorting habit settles.

What about the silent k in knock?

Treat it as a fun secret rather than an exception to master: the k hides, the ending still says ock, and the word still sorts with rock and sock. Children love being in on a spelling secret.

Kindergarten short o word families

Kindergarten short o word families worksheets

The short-o families on this sheet are -op (hop, top), -ot (hot, pot), and -ock (rock, sock). Kindergartners sort the words by ending and get a vowel that's easy to hear and fun to say.

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

jotrockflockdropplotclockblocknotstopchopshoppot

Columns: -op and -ot and -ock. "shop" belongs under -op; "plot" belongs under -ot; "block" belongs under -ock.

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 kindergarten sheet

Kindergarten sheets draw from 34 words, 15 to a page. Kindergarten and 1st grade print from the same 34 words. What changes is the standard (RF.K.3 here) and the teaching notes below.

Some of the words:

copflopcrophotcotspotlocksockshockstock

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

Short o is theatrical: open the mouth wide and let the sound drop. These families sort cleanly, so this is a good sheet for building speed and confidence. If knock appears, enjoy the silent k together; one odd letter is a feature, not a problem.

Watch for: Knock keeps a silent k at the front, but its ending still sorts it into the -ock family. The word not is a family word here, nothing more: -ot like hot and pot.

Common questions about kindergarten short o word families

Which short-o family is easiest to start with?: The -op family: hop, top, mop, pop are all words kindergartners can act out, and acting a word out makes it unforgettable. Start there, then add -ot and -ock as the sorting habit settles.
What about the silent k in knock?: Treat it as a fun secret rather than an exception to master: the k hides, the ending still says ock, and the word still sorts with rock and sock. Children love being in on a spelling secret.

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Aligned to Common Core RF.K.3. Reviewed by the One more sheet team. Content version 241, updated July 2026.

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