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Teach Your Kids to Eliminate Fragments and Run-ons in Their Writing

written by: Trent Lorcher • edited by: SForsyth • updated: 1/17/2012

I hate run-ons, they're so annoying. Fragments too. Let's end run-ons now, this lesson will help. Right Now.

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    A Rare Disease

    I saw Bob Pitchfield last Spring. He looked emaciated, face drawn in, eyes sunk. I asked him what was wrong.

    He answered, "Because students can't write in complete sentences."

    "What?" I replied.

    "I'm going home, tomorrow will be better, where are my pills?"

    "Come again, Bob"

    "Why they use fragments and run-ons."

    I found out later that Bob had a rare disease, called Ireadtomanyhorribbleessayswithrunonsandfragmentitas, occurring only in high school English teachers. Luckily, there's a cure: this sentence fragments and run-on sentences lesson plan. Use it now before you end up like Bob.

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    Common Fragments

    A critical component of avoiding sentence fragments and run-on sentences is understanding what a correct sentence is and the different types of clauses that make up sentences (see previous lesson plan in the series for a run-down of clause types). Sentences must have at least one subject and one verb and express a complete thought. A sentence fragment is part of a sentence that is punctuated as if it were a complete sentence. They appear in the following forms:

    Freestanding Subject or Verb:

    Fragment: My dog, Rover.

    Corrected: My dog, Rover, eats mice.

    Subordinate Clause:

    Fragment: Before I lost weight.

    Corrected: Before I lost weight, I broke the trampoline three times.

    A Phrase:

    Fragment: Encouraging vagabond behavior.

    Corrected: I was arrested for encouraging vagabond behavior.

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    Common Run-ons

    A run-on sentence is two or more complete sentences incorrectly written as one. The most common is called a comma splice, in which two sentences are separated by a comma. Run-on sentences can be corrected in the following ways:

    Separate the two sentences with a period:

    Run-on: A couple wanted to go green this holiday, they saved the planet.

    Corrected: A couple wanted to go green this holiday. They saved the planet.

    Join them with a comma and a conjunction:

    Corrected: A couple wanted to go green this holiday, and they saved the planet.

    Join them with a semi-colon:

    Corrected: A couple wanted to go green this holiday; they saved the planet.

    Join them with a semi-colon and a conjunctive adverb:

    Corrected: A couple wanted to go green this holiday; consequently, they saved the planet.

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    Procedures

    • Post the above information in a noticeable location.
    • Instruct students to pick out a piece of writing. Circle any potential sentence fragment or run-on sentence.
    • Correct fragments by making sure they have a subject and a verb, and express a complete thought (you may want to review clauses).
    • Correct run-ons using the aforementioned strategies.

    For practice connecting independent clauses correctly, the following activity works well:

    • Choose a topic of interest for students.
    • Instruct students to write 2 of each of the following types of sentences:
      • two independent clauses connected by a comma and a conjunction.
      • two independent clauses separated by a semi colon.
      • two independent clauses separated by a semi colon and a conjunctive adverb.