National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: Potencias Y Radicales
In this module you will learn about radicals numbers and their operations.
University of Saskatchewan (Canada)
University of Saskatchewan: Square Roots & Other Radicals
This University of Saskatchewan site provides general information about square roots and other forms of radical equations.
University of Saskatchewan (Canada)
University of Saskatchewan: Exponents and Exponential Functions
This site reviews the basic properties of exponents, and explains rational exponents and exponential functions, including those with base "e." Provides examples and lots of exercises.
Other
Platonic Realms: Conic Sections
A proof to show that the square root of two is an irrational number, followed by a shorter and even more beautiful proof.
Other
Square Root on Your Computer's Calculator
Site provides a tutorial on using a calculator to evaluate square roots.
Math Planet
Math Planet: Pre Algebra: Square Roots and Real Numbers
Provides an explanation, examples, and a video lesson all related to square roots and real numbers. [1:59]
McGraw Hill
Glencoe Mathematics: Online Study Tools: Estimating Square Roots
This site gives a short interactive quiz which allows students to self-assess their understanding of estimating square roots.
Sophia Learning
Sophia: Finding a Missing Coordinate Using the Distance Formula: Lesson 5
This lesson demonstrates how to find missing x or y coordinate of a segment when given the distance between the two points on a coordinate plane. It is 5 of 4 in the series titled "Finding a Missing Coordinate Using the Distance Formula."
Mangahigh
Mangahigh: Number: Solve Problems Using Radicals
Use the pythagorean theorem to solve problems with radicals.
Mangahigh
Mangahigh: Algebra: Approximation Using a Calculator
Students work through an online turorial on the topic of approximation and then take a ten question quiz that increases in difficulty as the problems progress.
CK-12 Foundation
Ck 12: Algebra: Expressions With Radicals
[Free Registration/Login may be required to access all resource tools.] Simplify radicals.
CK-12 Foundation
Ck 12: Algebra: Nth Roots
[Free Registration/Login may be required to access all resource tools.] This lesson introduces and teaches how to evaluate nth roots. Students examine guided notes, review guided practice and attempt practice problems.
CK-12 Foundation
Ck 12: Algebra: Solving Equations Using the Pythagorean Theorem
[Free Registration/Login may be required to access all resource tools.] Use the Pythagorean Theorem to find the length of a leg
CK-12 Foundation
Ck 12: Algebra: Square Roots and Irrational Numbers
[Free Registration/Login may be required to access all resource tools.] Learn how to find square roots and identify irrational numbers.
Texas Education Agency
Texas Gateway: Formulating and Solving Square Root Equations
This activity provides an opportunity for students to use a square root equation to model a situation and then use the model to make predictions.
Texas Education Agency
Texas Gateway: Solving Square Root Equations Using Tables and Graphs
Given a square root equation, the student will solve the equation using tables or graphs - connecting the two methods of solutions. Includes Java applet.
Discovery Education
Discovery Education: Web Math: Algebra
This WebMath site provides links to tutorials and lessons in both Algebra I and II. Links to topics such as factoring, solving equations, polynomials, simplifying equations, graphing, and much more.
Discovery Education
Discovery Education: Web Math: Simplify a Term Under a Radical Sign
This site walks you step-by-step through simplifying an expression under a square root sign. Type your problem into the "math solver," and your answer, complete with a full description, is provided.
Discovery Education
Discovery Education: Web Math: Simplify a Term Under a Radical Sign
This site walks you step-by-step through simplifying an expression under a square root sign. Type your problem into the "math solver," and your answer, complete with a full description, is provided.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Graphs of Square Roots and Cube Roots
Seventeen problems present practice working with graphs of square roots and cube roots. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution"...
Varsity Tutors
Varsity Tutors: Hotmath: Graphing Calculator Practice Problems Pythagorean Theorem
Practice using your graphing calculator for real number problems, including the Pythagorean Theorem. If you get stumped or if you would like to check your work, then select the View Solution button, which is located directly under each...
Purple Math
Purplemath: Square Roots: Introduction & Simplification
Purplemath offers a well-described definition of radicals and square roots. The lesson is very easy to understand. Many examples.