Click to enlarge All matter is made up of atoms. This is something we now take as a given and one of the things you learn right back at the beginning of high school or secondary school chemistry classes. Despite this, our ideas about what an...

How to shade required regions of a Venn Diagram. How to shade regions of two sets and three sets, Venn Diagram Shading Calculator or Solver with video lessons, examples and step-by-step solutions

"It would be a final goodbye, a final salute to those who gave their lives"

Polymath Terry Moore wondered why "X" is the universal unknown in algebra. He dove into the history of numbers to come up with an unexpected answer.