Interactive
Government of Alberta

Learn Alberta: Math Interactives: Exploring Square Roots (Object Interactive)

For Students 6th - 8th Standards
Explore a set of perfect squares, as well as their square roots using this highly interactive math resource. In addition, students will get to look at estimates of the square roots of non-perfect squares. Printable activities, solutions,...
Unit Plan
Khan Academy

Khan Academy: Simplify Roots of Negative Numbers

For Students 9th - 10th Standards
Rewrite square roots of negative numbers as imaginary numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unknown Type
Khan Academy

Khan Academy: Simplify Roots of Negative Numbers

For Students 9th - 10th Standards
Rewrite square roots of negative numbers as imaginary numbers.
Interactive
Government of Alberta

Learn Alberta: Math Interactives: Exploring Square Roots Video

For Students 6th - 8th Standards
This video illustrates the concepts of square roots, slope, and the Pythagorean Theorem as they are used in designing and constructing skate park rails, ramps, and pipes. An interactive activity is also included where students are able...
eBook
Houghton Mifflin Harcourt

Holt, Rinehart and Winston: Homework Help Independent Practice: Squares and Square Roots

For Students 9th - 10th Standards
Get independent practice working with squares and square roots. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: N Cn, a Rei Complex Square Roots

For Teachers 9th - 10th Standards
Working with complex numbers allows us to solve equations that cannot be solved with real numbers. Here we will investigate complex numbers which arise as square roots of certain complex numbers. Aligns with N-CN.A.2 and A-REI.A.1.
Unit Plan
Khan Academy

Khan Academy: Approximating Square Roots

For Students 7th - 8th Standards
Practice finding the approximate value of square roots by thinking about perfect squares. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Unknown Type
Khan Academy

Khan Academy: Roots of Decimals and Fractions

For Students 6th - 8th
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.
Handout
Khan Academy

Khan Academy: Square Roots of Perfect Squares

For Students 7th - 8th Standards
Resource provides review and practice of how to find the square root of perfect squares.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Square Roots and Irrational Numbers

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Find the principal square root of numbers and simplify square root problems.
Handout
University of Cambridge

University of Cambridge: Nrich: Irrational Proof

For Students 9th - 10th Standards
This site contains a proof that the square roots of all prime numbers are irrational.
Interactive
Quia

Quia: Square Roots

For Students 9th - 10th Standards
This interactive matching game allows students to practice identifying the squares and square roots of numbers.
Unit Plan
Oswego City School District

Regents Exam Prep Center: Complex Numbers

For Teachers 9th - 10th Standards
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...
Whiteboard
ClassFlow

Class Flow: Squares and Square Roots

For Teachers 9th - 10th
[Free Registration/Login Required] Students complete multi-step computations using order of operations in situations involving combinations of rational numbers including whole number exponents and square roots of square numbers.
Activity
Oswego City School District

Regents Exam Prep Center: Simplifying Square Roots With Negative Numbers

For Students 9th - 10th
This tutorial and practice shows how to simplify radicals even with a negative number. Features include a teacher page that has a Bingo game to teach the concept.
Activity
Math Is Fun

Math Is Fun: Squares and Square Roots

For Students 9th - 10th Standards
The learning activity examines squares and square roots. Topics include perfect squares, how to square a number, and the square root symbol. The resource consists of explanations and examples.
Handout
Khan Academy

Khan Academy: Approximating Square Roots Walk Through

For Students 7th - 8th
Tutorial covers a series of questions, examples, and practice that will help students learn how to approximate square roots.
Activity
Math Medics

S.o.s. Math: Algebra

For Students 9th - 10th Standards
This lesson provides basic instruction on the major concepts in algebra. Content includes a focus on fractions, units of conversion, complex numbers, quadratic equations, factorization and roots of polynomials, solving equations, systems...
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 8.ns Placing a Square Root on the Number Line

For Teachers 8th Standards
This task develops students' number sense of squares and square roots. They are to find an approximation of a less obvious square root of a number to see where it would fall on a number line. To do this, they must examine perfect squares...
Interactive
Quia

Quia: Square Roots (Concentration Game)

For Students 6th - 8th Standards
This concentration game explores square roots. There is a link to a list of the numbers being used so students can check their answers.
Article
Mocomi & Anibrain Digital Technologies

Mocomi: What Is Square Root?

For Students 2nd - 8th
Briefly covers the topics of square roots, decimal numbers, and perfect squares.
Handout
Wolfram Research

Wolfram Math World: Square Root

For Students 9th - 10th Standards
This math site from Mathworld.com explains what a square root is including information on imaginary numbers and many links. This site also addresses the continued fractions of positive real square roots, in particular the square root of...
Handout
Math Open Reference

Math Open Reference: Root (Of a Number)

For Students 9th - 10th Standards
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.
Activity
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: Square Roots and Irrational Numbers

For Students 9th - 10th Standards
Math Forum response to whether square roots of all non-perfect squares are irrational. Contains a proof showing that such cases are, indeed, irrational.