This can be set up in stations. There are four different worksheets, each with four problems on them. The problems are solved already, some correctly and some have mistakes. Students must examine the work to determine if it is correct or not. If there is a mistake, the students must correct it. If the work is correct, they should explain the work.
Each worksheet could be set up to be a station. I typically have students work in partners in order to facilitate discussion about the math. Students should be able to complete each station in 10 minutes or less.