Just when I checked Google homepage, I then remember my elementary and high school years which almost always mention Venn Diagram in our Mathematics class. The homepage today is very artistic and also animated which I am very sure that every kids and students would surely enjoy learning from those then.
Furthermore, Venn Diagram was first introduced by John Venn, a British logician and philosopher. I have not much information and knowledge about John Venn, honestly. But at least the use of Venn diagram is still somehow fresh in me until today. And it feels really good to see how Google doodles John Venn 180th Birthday today.