Key Takeaways

  • Commas separate items, introductory elements, and nonessential information
  • Apostrophes show possession or contractions
  • Semicolons join independent clauses or separate complex list items
  • Colons introduce lists or explanations after complete sentences
  • Know the difference: its/it's, your/you're, their/they're/there
Last updated: January 2026

Punctuation

Correct punctuation clarifies meaning and indicates pauses, stops, and relationships between ideas. The ParaPro tests common punctuation rules.

End Punctuation

MarkUseExample
Period (.)Statements and commandsShe is a teacher.
Question Mark (?)Direct questionsIs she a teacher?
Exclamation Point (!)Strong emotion/emphasisThat's amazing!

Commas

Use commas:

1. In a series (3+ items):

  • We bought apples, oranges, and bananas.

2. Before coordinating conjunctions joining independent clauses:

  • I studied hard, and I passed the test.

3. After introductory elements:

  • After lunch, we went outside.
  • However, the plan changed.

4. Around nonessential information:

  • My sister, who lives in Texas, is visiting.

5. With dates, addresses, and titles:

  • January 15, 2026
  • Portland, Oregon
  • Dr. Smith, PhD

6. With direct address:

  • Students, please sit down.

7. With quotations:

  • She said, "Hello."

Comma Errors to Avoid

Don't use commas:

  • Between subject and verb: ✗ The tall student, ran fast.
  • Between compound subjects/predicates: ✗ Tom, and Jerry are friends.
  • Before the first item in a series: ✗ I bought, apples, oranges, and bananas.

Apostrophes

Possessives:

TypeRuleExample
Singular nounAdd 'sthe dog's bone
Plural noun (ends in s)Add 'the dogs' bones
Plural noun (no s)Add 'sthe children's toys

Contractions:

  • do not → don't
  • it is → it's
  • they are → they're

Common Errors:

  • its (possessive) vs. it's (it is)
  • your (possessive) vs. you're (you are)
  • their (possessive) vs. they're (they are) vs. there (place)

Semicolons

Use semicolons:

1. Between independent clauses without a conjunction:

  • I love reading; she prefers writing.

2. Between items in a series containing internal commas:

  • We visited Paris, France; Rome, Italy; and London, England.

Colons

Use colons:

1. Before a list (after a complete sentence):

  • She bought three things: bread, milk, and eggs.

2. Before an explanation or example:

  • Remember this rule: always proofread your work.

Quotation Marks

Use quotation marks:

  • For direct quotes: She said, "Hello."
  • For titles of short works: "The Raven" (poem)

Punctuation with quotes:

  • Periods and commas go INSIDE: "Hello," she said.
  • Question marks/exclamation points go inside if part of the quote

Classroom Application

Help students with punctuation by:

  • Using punctuation marks as visual cues during reading
  • Creating punctuation anchor charts
  • Practicing with dictation exercises
  • Teaching one punctuation mark at a time
  • Playing punctuation games and activities
Test Your Knowledge

Which sentence uses the apostrophe correctly?

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B
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D
Test Your Knowledge

Which sentence uses commas correctly?

A
B
C
D