Wyzant
Wyzant: Basics of Equations
This tutorial from WyzAnt contains a walk-through of the basics of solving algebraic equations. Examples are given and the tutorial ends with an interactive worksheet that contains an answer key.
Wyzant
Wyzant: Basics of Proportions
This tutorial from WyzAnt on proportions describes in detail the functions of proportions and includes several examples to demonstrate how to solve proportions. The tutorial is concluded with an interactive worksheet that allows for...