Super Teacher Worksheets

Sixth Grade Spelling List F-12

Unit F-12 consists of irregular plurals. Plural and singular forms are provided to highlight irregular pluralization patterns in cacti (cactus), foci (focus), crises (crisis), hypotheses (hypothesis), larvae (larva), lice (louse), quizzes (quiz), fungi (fungus), tornadoes (tornado), indices (index), vetoes (veto), vertebrae (vertebra), bacteria (bacterium), curricula (curriculum), criteria (criterion), dominoes (domino), calves (calf), nuclei (nucleus), radii (radius), and antennae (antenna).
spelling f12 Worksheets

Spelling List

This file lists all the irregular plural nouns and their singular forms. The "About Your Spelling Words" section draws attention to some of the words' shared (but uncommon!) pluralization patterns.
6th Grade
Common Core
Preview File
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Worksheets and Puzzles

This worksheet contains 25 questions, fill-in-the-blank sentences, and spelling scrambles - one for each word.
6th Grade
Is hippopotami the correct spelling? Is crisises the correct plural of crisis? Read through these short sentences and provide corrections wherever necessary.
6th Grade
Follow the clues and make sure all your plurals are correctly spelled, and this puzzle should be no problem!
6th Grade
If you can tell what plural noun the jumbled letters "phioptopmia" are supposed to be, this is the activity for you! (Hint: they're animals!)
6th Grade
Some tricky filler letters help make this activity more engaging than similar puzzles might be. Who will find their words the fastest?
6th Grade
Each word is provided in a numbered list and has two blank lines beside it for students to practice.
6th Grade
Not sure how to grade the original sentences students will generate during this activity? STW has you covered! Just use the ready-made scoring rubric on the second page.
6th Grade


These cards will be a hit during every review session. Laminate the cut-out cards for added durability.
6th Grade

Alphabetical Order

The first group of words to alphabetize on this sheet all start with the letter c. The other four groups all have mixed initial letters.
6th Grade
This one-page printout has a fun cacti graphic and blank lines for students to write their words in ABC order. Don't forget to have the complete list on hand!
6th Grade
The top half of this worksheet has boxes numbered 1 through 20. Cut along the dotted lines on the bottom half of the page and then glue the words in the right order.
6th Grade

Spelling Test

A variety of cacti decorate the upper right corner of this printable test sheet for students.
6th Grade
Each plural spelling word is seamlessly incorporated into a sentence to be read out loud on the last day of the spelling unit.
6th Grade

Master Lists

Download this file to get all the lists for our 6th grade spelling units in one place.
6th Grade
See also:
Spelling Unit F-13

Context matters for words from the 13th list in STW's grade 6 spelling series. Use our helpful worksheets to learn how to spell pairs of homophones such as: bazaar and bizarre, compliment and complement, vein and vain, and idol and idle.

6th Grade Spelling (Main Index)

Skip to any unit by using this index page for the whole series.

Noun Worksheets

Review nouns using this collection of activities. There are additional worksheets about regular pluralization rules, irregular plurals, and links to worksheets about the differences between plurals and possessives.

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Common Core Alignment