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Website
Varsity Tutors

Varsity Tutors: Hotmath: Algebra Review: Add and Subtract Fractions

For Students 9th - 10th Standards
Find a quick, concise explanation of how to add and subtract fractions. Step by step examples are included to help you understand how to find the sum or difference for fractions with both like and unlike denominators.
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Whiteboard
ClassFlow

Class Flow: Adding Fractions With Unlike Denominators

For Teachers 3rd - 5th Standards
[Free Registration/Login Required] This flipchart teaches the steps necessary to add or subtract fractions with unlike denominators by getting a common denominator. It uses Activotes to assess getting the correct least common multiple,...
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Interactive
Quia

Quia: Equivalent Fractions

For Students 3rd - 6th Standards
Use this Web site to practice finding equivalent fractions using a matching game format. CCSS.Math.Content.3.NF.A.3.a Understand two fractions as equivalent (equal) if they are the same size, or the same point on a number line.
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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Addition and Subtraction of Rational Expressions

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Add and subtract rational expressions with the same denominator and different denominators.
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Unit Plan
CK-12 Foundation

Ck 12: Arithmetic: Evaluation and Comparison of Powers

For Students 6th
[Free Registration/Login may be required to access all resource tools.] Evaluate and compare powers.