The article is meant to present to middle and high school students to the principles underlying the rules of arithmetic of the integers and the rational numbers. The aim is to demystify and simplify those rules so that...

This lesson introduces you, the student, to the Cartesian coordinate plane. The goal is that you understand Cartesian coordinates well, and that you are able to master using them to describe points in the Cartesian...

This short article aims to describe what variables are for the high school mathematics students, and what one can do with them.