Whose paper is this?
Students are put into groups and given the worksheet to complete. Make sure students do not write their names. When students are finished, all worksheets are handed in and shuffled. One student from each group then comes to the front and chooses a paper to read aloud. That student then has to guess whose paper it is, a correct guess earns that group a point.
Some students may need help reading the answers. Adding a group number to the top of each sheet prevents students from getting papers from their own group.