I'm aware that it isn't properly exactly a Venn diagram, now, but the mathematics-artist Robert Austin has a nice picture of the real numbers, and the most popular subsets of the real numbers, and how they relate. The bubbles aren't to scale --- there's just as many counting numbers (1, 2, 3, 4, et cetera) as there are rational numbers, and there are far more irrational numbers than there are rational numbers --- but if you don't mind that, then, this is at least a nice little illustration.
Tags » Venn Diagrams
- Topic: Even and Odd: Book: Even or Odd? by J. Mattern.
- Topic: Even and Odd: Using one color of glass beads, I took out various numbers of beads between 1 and 10, asked them how many there were, and then asked one of the kids to say whether it was odd or even, and prove it (by grouping it into pairs). 862 more words