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.
Khan Academy
Khan Academy: Roots of Decimals and Fractions
In this exercise, students practice finding the roots of decimals and fractions. Students receive immediate feedback and have the opportunity to get hints, watch a video, and try questions repeatedly.
Mocomi & Anibrain Digital Technologies
Mocomi: What Is Square Root?
Briefly covers the topics of square roots, decimal numbers, and perfect squares.
Doina Popovici
Math Play: Square Roots Millionaire Game
Show off your knowledge of radicals with this online game. Game requires students to add, subtract, multiply, divide, simplify, estimate, and graph expressions with radicals.
Common Core Sheets
Common Core Sheets: The Number System 8.ns.2 Worksheets
Print or create worksheets to assess students' understanding of radicals, square roots, and irrational numbers.
CK-12 Foundation
Ck 12: Algebra: Multiplication and Division of Radicals
[Free Registration/Login may be required to access all resource tools.] In this lesson student learn about dividing square roots. Students examine guided notes, review guided practice, watch instructional videos and attempt practice...
Shmoop University
Shmoop: Basic Operations: Roots
The mathematics resource explores roots. Students examine the topic through class notes and examples. Practice problems with solutions are available to check for comprehension of the concept.
Khan Academy
Khan Academy: Square and Cube Challenge
Practice solving problems using your knowledge of square and cube roots. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
CK-12 Foundation
Ck 12: Algebra: Irrational Numbers and Radicals Study Guide
This comprehensive study guide highlights the main terms and formulas needed to review irrational numbers and radicals. Examples are included.
Khan Academy
Khan Academy: 4th & 5th Roots
Radicals are also known as roots. The most common are square root and cube root, but there are more.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Square Roots and Irrational Numbers
Math Forum response to whether square roots of all non-perfect squares are irrational. Contains a proof showing that such cases are, indeed, irrational.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Properties of Square Roots
Find a quick, concise explanation of the properties of square roots. An example is given and clearly explained for each property.
ClassFlow
Class Flow: Exponents & Roots
[Free Registration/Login Required] This flipchart provides an explanation of exponents and roots.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Rational Numbers and Square Ro
Math Forum response to which numbers, other than squared positive integers, can be simplified as rational numbers.
Khan Academy
Khan Academy: Quadratics by Taking Square Roots
Analyze the process of solving a quadratic equation by taking the square root. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Other
Dan's Math: Basic Skills Topics
College professor Dan Bach offers a review of various basic topics in arithmetic, pre-algebra, and algebra. Order of operations, exponents, square roots, variables, and combining terms are just a few of the many topics covered.
Interactive Mathematics
Interactive Mathematics: Roots and Radicals
Here you'll find information on radicals: notation, symbols, and laws for simplifying. The information is brief, but easy to follow.
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.
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.
Oswego City School District
Regents Exam Prep Center: Complex Numbers
A wealth of material to help you plan classroom instruction on complex numbers: several lessons that cover the number i, square roots of negative numbers, and operations involving complex numbers; practice activities, some of which...
Fun Brain
Fun Brain: Tic Tac Toe Squares (Math Facts Games)
Players practice adding, subtracting, multiplying, and dividing skills while playing virtual Tic Tac Toe. They can also try their hand at squares, cubes, and square roots.
Other
Answermath: Raiz
An online root game which offers practice in mental math and times practice. When you submit the wrong answer, it provides the correct one. Students and teachers can choose square root or cube root problems. In Spanish, with links to...