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Common Core ELA7th GradeLanguage

L.7.4: Work Out Unknown Words

Also written as CCSS.ELA-LITERACY.L.7.4 · Cluster: Vocabulary Acquisition and Use.

Make a Vocabulary WorksheetAll 41 7th Grade ELA Standards

The Official Wording

Determine or clarify the meaning of unknown and multiple-meaning words and phrases based on grade 7 reading and content, choosing flexibly from a range of strategies.

Common Core State Standards, Grade 7, Language · Read it at the source · Checked October 14, 2026

What L.7.4 Means in Plain English

Seventh graders meet an unfamiliar word and choose a strategy: the sentence around it, a Latin or Greek root such as bell (war) in belligerent, or a dictionary or a science glossary for meaning, pronunciation and part of speech. Then they check the guess back in the sentence.

Sixth graders (L.6.4) used the same strategies with roots like aud in audible. Seventh grade adds specialized references, like a science dictionary, and new roots like bell and cred. Eighth grade (L.8.4) keeps the toolkit and adds roots like ced in precede.

L.7.4 I Can Statements

  • I can use the sentence around a word to guess its meaning.
  • I can use Greek and Latin roots like cred and bell.
  • I can check a guess in a dictionary or glossary.

L.7.4 Worked Example

One unfamiliar word, two attempts at it, and the strong one combines three strategies before it checks the answer.

Prompt

What does incredulous mean in this sentence? “When Jamal said he had finished the entire science project in one night, Ms. Ortiz gave him an incredulous look and asked to see his notes.”

Not YetIncredulous means incredible, so she thought his project was amazing.A guess from a look-alike word, never checked. A teacher who is amazed doesn’t ask to see the notes, so the context was ignored.
Meets the StandardShe asked to see his notes, so she probably doubted him. The root cred means believe, as in credible, and in- means not, so incredulous should mean not believing. The dictionary agrees: it’s an adjective, pronounced in-KREJ-uh-lus, meaning unwilling to believe something. Reading it back, “a doubtful look” fits the sentence.Context gives a first guess, the root and prefix sharpen it, the dictionary confirms the meaning, pronunciation and part of speech, and the student tests the meaning back in the sentence.
Moves to Use
Read the whole sentence for clues: what does the person do next?Break the word into parts: in- (not) plus cred (believe).Look it up to confirm the meaning, pronunciation and part of speech.Use a specialized reference, like a textbook glossary, for subject words.Put the meaning back in the sentence and check that it makes sense.

Common Mistakes with L.7.4

Matching a look-alike word

“Incredulous means incredible.”

Try this: Have students split the word into prefix, root and suffix before guessing, and name one other word that shares the root.

Taking the first dictionary meaning

Reading “the cell membrane” and settling on cell as a small room in a prison

Try this: Ask students to read every numbered definition, choose the one that fits the sentence, and check whether a science glossary defines it more precisely.

Guessing and moving on

A context guess written in the margin and never tested

Try this: Require a check step on every vocabulary log: put the meaning back into the original sentence and confirm it still makes sense.

Where L.7.4 Fits

Comes BeforeL.6.4Use context, Greek and Latin roots like aud and reference materials, then verify the meaning.
AlongsideRI.7.4Work out figurative, connotative and technical meanings of words in nonfiction.RH.6-8.4Determine the meaning of history and social studies vocabulary as it is used in a text.
Comes NextL.8.4Use the same strategies with grade 8 words and roots like ced in precede and recede.

Practice L.7.4

Vocabulary Worksheet GeneratorFree ToolWord, definition and sentence practice from your own list of root families, such as incredulous, credible and credentials.Root familiesUnit wordsGrade 7
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Quick Check

  1. What clue in the sentence suggests what incredulous means?
  2. How do the prefix and root help with incredulous?
  3. What does the dictionary add that context and roots could not?

L.7.4: Other Names

L.7.4CCSS.ELA-LITERACY.L.7.4

Common Core State Standards © Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved. Official wording from the Common Core State Standards PDFs at corestandards.org, last checked October 14, 2026. The explanation, I can statements, example, mistakes and practice on this page are EMStudio’s own, written beside the official wording. They are not part of the standard.