Tried, tested, free resources for learning about rational exponents.
Interactive
Transum Math Surds
Transum math Fraction Exponents
Practice Simplify Surds Calculator permitted, show working.
Quiz Simplify Surds Calculator permitted, show working on paper.
Practice Fraction Exponents No calculator, evaluate fraction exponents.
Quiz Fraction Exponents No calculator, Please use reference sheet
Video
Math Antics Basic Laws of Exponents
Khan Academy Fraction Exponents
Brian McLogan Evaluate Fraction Exponents
Printable
Mid-Unit Review: Number and Algebra Mid-Unit Review
Mid-Unit Review Solutions: Mid-Unit Review Solutions
Unit Review: Number and Algebra Unit Review
Unit Review Solutions: Unit Review Solutions