Week 2

This week in Math 231, we introduced the concept of Venn Diagrams. Something seemingly outdated and for children, in fact takes a whole new light in this class. The concepts of unions and intersections of groupings create a much more complex concept than once believed.

The concept of a Venn Diagram originates with two groups and their populations and intersection of populations.


For example; people who like country music and people who like pop music are in two separate circles, and those who like both both would fit in the center segment.


The next concept of the Venn Diagram was isolating certain populations of this diagram. For example, to show exclusively the population that like pop AND country music. Written as A intersect B.


Another idea, was exhibiting the entire population, this is called a union and is written A U B


An idea in which you isolate everything but a certain aspect has a line over the subject. So A with a line over it is everything but A


So to combine these events one could draw everything BUT the INTERSECT of A and B and would look like this.


There are many things you can do with a Venn Diagram and I think its a great visual way for kids to learn.