Unit Plan
CK-12 Foundation

Ck 12: Arithmetic: Comparison of Ratios in Decimal Form

For Students 7th
[Free Registration/Login may be required to access all resource tools.] Write and compare ratios in decimal form
Unit Plan
Khan Academy

Khan Academy: Reducing Rational Expressions to Lowest Terms

For Students 9th - 10th Standards
Learn what it means to reduce a rational expression to lowest terms, and how it's done!
Unknown Type
University of Waterloo (Canada)

Centre for Education in Mathematics and Computing: Ratio and Rate [Pdf]

For Students 6th - 8th Standards
Learners explore the concepts of rate and ratio in a variety of problem-solving situations. Worksheets contain definitions and visual representations of concepts. Link to related ratio game. Other skills include measurement, data...
Unit Plan
Khan Academy

Khan Academy: Intro to Rational Expressions

For Students 9th - 10th Standards
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.