Willow Tree
Rational vs. Irrational Numbers
Build an understanding of rational numbers and their counterpart irrational numbers. Lead learners through an explanation of rational numbers and the ways they can be expressed. Then introduce them to irrational numbers and make...
Virginia Department of Education
Rational Equations
Provide guidance and practice of the useful skill: solving rational equations using both an algebraic and graphical approach. Pupils solve increasingly more difficult rational equations using algebraic methods. After, they...
Willow Tree
Simplifying Square Roots
The square root of five and five do not have the same value! How many times have you addressed this with math classes? A lesson gives an explanation of a square root and gives examples for simplifying square root...
Charleston School District
Identifying Irrational Numbers
These numbers have some personality! Are they rational or irrational? The lesson examines the definitions of rational and irrational numbers and shows examples of how to identify them.
Charleston School District
Converting Fractions and Decimals
A decimal is just a fraction in disguise! Scholars learn methods for converting decimals and fractions including repeating decimals. Performing the conversions strengthens their understanding of the relationship between the two forms....
Del Mar College
Exponential and Radical Rules
So many rules and so little time. Make it easy and provide all the exponent and radical rules in one place as an easy reference guide. All of the properties come with several examples to show how the rules apply to different problems.
West Contra Costa Unified School District
Fractional Exponents
Wow! Here is a handout packed full of tips and worked-out solutions to supplement instruction on fractional exponents. The lesson introduces and thoroughly explains the Algebra II concept, and closes with a...
Willow Tree
Linear Relationships
There's just something special about lines in algebra. Introduce your classes to linear equations by analyzing the linear relationship. Young mathematicians use input/output pairs to determine the slope and the slope-intercept formula to...
Integrated Publishing
Integrated Publishing: Rationalizing Denominators
Site provides an example on rationalizing denominators plus some practice exercises.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Least Common Denominator
Find a quick, concise explanation of how to find the least common denominator for fractions or rational expressions. Examples are given and clearly explained.
Oswego City School District
Regents Exam Prep Center: Add and Subtract Rational (Fractional) Expressions
Add and subtract rational expressions like a pro after you use this site. Finding common denominators is made easy with this tutorial. Try the example problems to test your knowledge, then check the solutions. The 'Topic Index' page...
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Rationalizing the Denominator
Site gives an explaination on why we rationalize the denominator.
Jim Loy
Jimloy.com: Rationalizing the Denominator
Read an explanation on how to rationalize the denominator using an example. Using exponents instead of the radical sign, the examples may be difficult to read.
Other
Karl's Calculus Tutor: The Difference of Squares
This site provides a general overview of the special case of factoring known as the difference of squares. This procedure highlights rationalizing the denominator.
Paul Dawkins
Paul's Online Notes: Algebra: Preliminaries: Radicals
Detailed math tutorial features notes and examples that define radical notation and simplified radical form while relating radicals to rational exponents and showing how to rationalize the denominator, It also gives the properties of...