Virtual Nerd
Virtual Nerd: Explain Each Step in Solving a Simple Equation
Choose from among several video tutorials that teach the process of solving simple equations using a variety of different tools. Topics include subtraction property of equality, addition property of equality, multiplication property of...
Khan Academy
Khan Academy: The Why of Algebra: Intuition Why We Divide Both Sides
Conceptual understanding of why one needs to divide both sides of an equation to solve for a variable.