The Venn diagram is a powerful graphic organizer:
In the next video you’ll see how to solve math problems with a Venn Diagram: http://gritineducation.com/venn-diagram/
You can use a Venn Diagram for identifying similarities and differences (Marzano). e.g. Comparing people with dogs:
http://gritineducation.com/marzano-over-effectieve-didactische-strategieen/ & http://gritineducation.com/marzano-overeenkomsten-en-verschillen/
Venn diagram showing which uppercase letter glyphs are shared by the Greek, Latin and Cyrillic alphabets, Www.wikepedia.com