Wolfram Research
Wolfram Math World: Radicals
MathWorld offers information on the radical symbol, along with information on radical identities. Lots of examples and illustrations.
Sophia Learning
Sophia: Terms Associated With Square Root Functions
The basic terms associated with square root functions are defined in this video tutorial. The lesson provides examples of radical functions, square root functions, and radicands. Students can check their understanding with an assessment.
Math Open Reference
Math Open Reference: Root (Of a Number)
Learn how to find the root of a number. Topics covered include two roots, roots of negative numbers, and imaginary numbers. This site offers descriptions along with multiple examples.
Math Open Reference
Math Open Reference: Radical
Learn about radicals with this reference guide. Detailed explanations and examples are given.
Math Open Reference
Math Open Reference: Radical Sign or Symbol
Learn about radical signs or symbols with this resource which offers detailed explanations and multiple examples. Subjects covered include bar length and radical expressions. Links to related topics.
Wolfram Research
Wolfram Mathworld: Vinculum
A brief description of the viniculum, a part of the radical sign, notation for repeating decimals, distance between two points, and more.