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

Topic wise notes are available. These notes provide full knowledge of ratio and proportion including word problems. These are clearly modified , easy to understand and cover all basic concepts.