Concept of Rational Exponents
Rational exponents are also known as fractional exponents or radicals. We have to have a sound knowledge of integral exponents before understanding rational exponents as same rules and ideas involve exploring the concept of rational exponents. Please read my following presentations on integral exponents if you want to get sound knowledge of basics first.
Below is the pdf link to full explanation of the concept.
PDF link on Fractional Exponents
Please comment if you have any suggestion or need further details on the concept or want some worksheets to practice the concept.