Paul Dawkins
Paul's Online Notes: Rational Expressions: Practice Problems
Practice exercise reviews how to reduce a rational expression to lowest terms and how to add, subtract, multiply and divide rational expressions.
Help Algebra
Help algebra.com: Simplifying Rational Expressions
The process of factoring and canceling is used to simplify, multiply, and divide rational expressions. Adding and subtracting rational expressions is also demonstrated, including finding common denominators.
National Council of Teachers of Mathematics
The Math Forum: Height to Weight Ratio
A student asks Dr. Math, "If I have a friend that weighs 155 pounds and is five feet, four inches tall, what is his height-to-weight ratio?" Find out how Dr. Math solves this problem and get a better understanding of the concept of ratio.
Houghton Mifflin Harcourt
Houghton Mifflin Harcourt: Saxon Activity Center: Graphing Calculator Activity: Common Denominators [Pdf]
A graphing calculator lesson focusing on common denominator. Lesson contains detailed examples, visual demonstrations with key functions, and practice problems. Acrobat Reader required.
AAA Math
Aaa Math: Ratios
This short exercise gives the student a ratio in reduced terms, and then gives the students a replacement value for one part of the ratio. The student is then to input the other part of the replacement ratio so as to keep the two ratios...
CK-12 Foundation
Ck 12: Elem Math: Multiplying Mixed Numbers Word Problems
[Free Registration/Login may be required to access all resource tools.] In this learning module, students are asked to solve word problems where they must multiply mixed numbers by first converting them to improper fractions,...
CK-12 Foundation
Ck 12: Elem Math: Multiplying Two Mixed Numbers
[Free Registration/Login may be required to access all resource tools.] In this learning module, students are asked to multiply two mixed numbers by first converting them to improper fractions, multiplying, then reducing the product to...
The Math League
The Math League: Decimals, Whole Numbers and Exponents
This tutorial has definitions and examples of decimals, whole numbers, and exponents. In addition, a variety of topics are covered, such as comparing, multiplying and subtracting.
Discovery Education
Discovery Education: Web Math: General Math
An extraordinary site that will help you with your math homework. Presented in a format that is both easy to understand and educational. Navigate through numerous instant-answer, self-help math solvers to help you figure out your math...
Curated OER
Low Terms
Practice finding the lowest term name for a variety of different fractions using a number line.
Houghton Mifflin Harcourt
Houghton Mifflin Harcourt: Saxon Activity Center: Graphing Calculator Activity: Proportions [Pdf]
A concise graphing calculator lesson on proportions. Detailed examples, demonstrations of functions, and practice problems included. Acrobat Reader required.
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.
CK-12 Foundation
Ck 12: Algebra: Excluded Values for Rational Expressions
[Free Registration/Login may be required to access all resource tools.] Reduce rational expressions involving fractions to simplest terms and find their excluded values.
Khan Academy
Khan Academy: Intro to Rational Expressions
This lesson will introduce you to rational expressions. You will learn how to determine when a rational expression is undefined and how to find its domain.