When students compare and contrast, they observe the similarities and differences between things. The Venn Diagram shows how things are alike and how they are different.
A Venn Diagram is made with two (or more) overlapping circles. Where the circles overlap, students write the characteristics that the things have in common. To the right and left of the overlapping area is where students list the differing characteristics of the things.
The students could compare/contrast the characteristics of different POLYGONS and thus demonstrate their understanding of how these 2-D shapes are alike and how they are different.
The students could draw the Venn Diagrams (and labeled pictures of the polygons) in their Mathematics notebook or you could download one of the FREE Venn Diagram Worksheets from Learning Workroom's website.
Go to Free Worksheets