Shark Learning
Grade 5/Sentences

Fix the Run-On Sentence

Students identify run-on sentences and rewrite them correctly — using punctuation, a conjunction, or a semicolon.
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Medium
1
8 questions
2
8 questions
3
8 questions
Hard
1
8 questions
2
8 questions

Practice Questions

  1. 🌊 The tide came in the beach flooded quickly.
    Show answer

    The tide came in, so the beach flooded quickly.

  2. 🦁 Lions are nocturnal hunters they sleep for up to 20 hours a day.
    Show answer

    Lions are nocturnal hunters, but they sleep for up to 20 hours a day.

  3. 🌿 Rainforests cover 6% of Earth they produce 20% of its oxygen.
    Show answer

    Rainforests cover 6% of Earth, yet they produce 20% of its oxygen.

  4. 🐘 Elephants have excellent memories they pass knowledge to younger elephants.
    Show answer

    Elephants have excellent memories, and they pass knowledge to younger elephants.

Teacher Resources
Teaching Notes

Three main fixes for run-ons: (1) add comma + FANBOYS, (2) add a semicolon, (3) split into two sentences. All three are correct.

Vocabulary
Run-on sentence: Two or more complete sentences joined without correct punctuation or conjunctions.
Compound sentence: Two independent clauses joined by a comma and conjunction or a semicolon.
Common Mistakes
  • Adding a comma alone (creates a comma splice)
  • Making the fix too drastic (changing meaning)
Extension Activities
  • Combine short sentences into longer ones.
  • Identify sentences with too many ideas.
  • Practice joining sentences with 'and' or 'but'.
Parent Tip

Read a story together and find sentences that are too long.

Learning Path
Skills Practiced
Identifying run on sentencesCorrecting run on sentencesJoining independent clauses