This is a pair of Edwards' Venn diagrams -- they use 4 sets instead of 3! This is intended as an extra follow-up to my previous submission of 6 more traditional Venn diagrams (also available through this site).
You'll probably want to remove (or skip) the answer key, but it is important to review it before you begin so you can give students hints as they get stuck. (I have yet to see anyone solve these without at least one hint.)
This document was created in Pixie. All the artwork is either from Pixie's clip art library or openclipart.org. If you want the Pixie document, you can download it here:
If you want to further develop this into another lesson/activity:
Ask students to make their own diagrams, then exchange with their peers and try to solve what each set is.
If you would like further instructions on creating or solving these diagrams, feel free to ask. I also wrote a simple program to help populate these (more complex) diagrams, so if we have the right constraints I can efficiently calculate a few different diagrams.