There are two activities included in this item. One is a review/remediation for fragments and run-ons, and the other is an extension activity. While I used them for differentiation in my classroom, they could also be used as introductory and practice activities.
The lower level activity provides models of fragments and run-ons, along with examples of how to change them to complete sentences.
The higher level activity has students find fragments and run-ons within a passage. Once they have found the errors, they are given a space to show the corrections.