Oswego City School District
Regents Exam Prep Center: Millionaire Radicals
In a format like TV's "Who Wants to Be a Millionaire," students answer math questions about radicals to earn points and help their group win the game. Teachers need to create their own question bank, which allows this game to be used for...
Help Algebra
Help algebra.com: Roots
After defining roots (radicals), this resource focuses on square roots. Examples are given to demonstrate how to simplify, find principal roots, and gives several properties of square roots.
Wolfram Research
Wolfram Math World: Principal Square Root
MathWorld offers an explanation for the concept of principal square root is found here.