Purple Math
Purplemath: Reducing Fractions
Any number, divided by itself, is just 1. Use this fact when reducing fractions. This resource helps you learn about how to reduce fractions. It has few worked out examples with detailed explanations.
Other
Help With Fractions: Reducing Fractions by Factorization
The rules for reducing fractions using factorization are clearly explained at this website. This is an excellent place to get step by step explanations for working with fractions.
Other
Help With Fractions: Simplifying Fractions
The rules for simplifying fractions are clearly explained at this website. An explanation of how to simplify improper fractions is also included. This is an excellent place to get step by step explanations for working with fractions.
Paul Dawkins
Paul's Online Notes: Algebra: Preliminaries: Rational Expressions
Detailed math tutorial features notes and examples that define rational expressions and investigate how to reduce a rational expression to lowest terms, add, subtract, multiply, and divide rational expressions.
Better Lesson
Better Lesson: Simplest Form
Given a set of equations students will be able to explain how to reduce fractions to simplest form and determine if the given set of fractions are equivalent.