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### We found 282 resources with the concept square roots

Lesson Planet: Curated OER

#### SAT Prep: Test 4 Section 2 Part 3

Continuing his theme of solving problems in a timely and correct manner, Sal teaches students that most problems on the SAT are designed to be solved in less than 30 seconds (though he does state that they are given over a minute for...

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#### Understanding Square Roots

What is the square root of 100? Sal explains what the square root of 100 is, but he needs a little help explaining why. Note: This concept can be challenging for some. If you are showing this video to your class, it does not stand alone....

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#### Add and Subtract Radicals

Radically apply old skills to a new concept. Pupils learn how to add and subtract radicals by applying previously learned skills of simplifying radicals and combining like terms. The video shows examples with both square and cube roots....

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#### Rational and Irrational Numbers

It's only rational to learn about number classifications. Individuals watch a short video that gives the definition of rational and irrational numbers. They watch as the narrator classifies different numbers as rational or irrational,...

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#### Square Roots

If square roots are the root of one's math anxieties, then here's the perfect resource. Viewers of a short instructional video see how to evaluate square roots. They first consider the square roots of perfect squares before learning how...

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#### Unit 11 Review: Solving Quadratics

It's time to get quadratics squared away. Scholars complete a 14-question activity to review solving quadratic equations. They use several different methods: taking square roots, applying the quadratic formula, and completing the square.

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#### Solve Quadratic Equations Using Square Roots

Not having an x term makes things so much easier. The second of five installments in Algebra I Unit 11 focuses on solving quadratic equations by taking square roots. Scholars learn to solve equations of the form ax^2 + c = d by watching...

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#### The Pythagoras Tree

View a tree designed by Pythagoras. Pupils watch a video as a tree is built by using squares representing the side lengths of a right triangle, with each side of the squares becoming the side of another triangle. Learners come up with...

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#### Can You Solve the Giant Cat Army Riddle?

Dr. Schrodinger, the rat, has set a trap for anyone trying to destroy the growth ray he is using to create giant cats to attack the city. Viewers are challenged to escape his trap and save humanity in this rather complex math riddle.

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#### Elementary Algebra

Find all the Algebra 1 content in one location. A helpful eBook contains the content typically found in an Algebra 1 course. Concepts range from solving and graphing linear equations to solving and graphing quadratic equations. Pupils...

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#### Smarter Balanced Sample Items: 8th Grade Math – Target B

Develop a radical approach to covering the Smarter Balanced targets for 8th grade math with a presentation that helps further develop math skills. Seven sample items demonstrate the expectation for working with integer exponents,...

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#### Smarter Balanced Sample Items: 8th Grade Math – Target A

Take an irrational approach to numbers with a Smarter Balanced assessment that covers the introduction of irrational numbers. The nine items cover identifying irrational numbers, approximating them with rational numbers, and converting...

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#### Direct Proportion

Direct change by finding the constant. Using two known values within a direct proportion, the resource shows how to find the constant of proportionality. Once individuals do that, they then find any value given the other. The video works...

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#### Real-Life Math | Police Accident Investigator

I swear it was an accident. Future motorists watch a video where a police accident investigator explains how he determines car speed from the length of a skid mark and the coefficient of friction. Performing similar computations requires...

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#### Why Is It Called a Square Root?

Take a radical look at square roots. The presentation examines square roots as the lengths of the sides of a square with a given area on the coordinate plane. Using this method, it is clear why the square root of a number can be positive...

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#### Tangent Line Approximation: Estimating Square Roots

Estimating a square root is as easy as evaluating a linear equation. Using the derivative of the square root function, pupils calculate an estimation of square roots. Class members determine the equation of the tangent line at the value...

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#### Newton's Method

Use an iterative process to find an approximation of a square root. Pupils use the interactive to find an approximation to find the positive root of a quadratic function with Newton's method. With the graphs, learners position the...

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#### Rationalising the Denominator

Take the next step in simplifying radical expressions. The video shows how to rationalize the denominator that contains square roots. Examples contain simple radicals and ones that require using conjugates.

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#### Exponents in Algebra

The rules still hold. By reviewing the meaning of exponents in arithmetic, the video takes a look at exponents in algebra. The resource develops the meaning of any number raised to the zero power. Taking the idea of exponents further,...

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#### Computer Color is Broken

Is your smartphone really doing its best work when it comes to color? The narrator describes technology's lazy approach to recreating colors in an insightful video. Science scholars discover how digital cameras store images, and why the...

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#### Square Roots and Irrational Numbers: Estimating Radicals

Try out a resource using triangles to estimate radicals. An interactive app allows learners to approximate some irrational numbers involving square roots. They find the two consecutive numbers that an irrational number lies between by...

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#### Evaluation of Perfect Square Roots: Neighborhood Park

Walking in the park can be good for the body and for mathematics skills. Young scholars use an interactive app to investigate the relationship between squares and square roots using a square with adjustable length. The program also takes...

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#### Radical Equations: Geometric Visual of a Square Root

How can you draw a number? A set of questions takes learners through the reasoning for why a geometric construction can be drawn to represent the square root of a number. An interactive helps visualize the construction.

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#### Use Square Roots to Solve Quadratic Equations: Plus or Minus

Get two answers from a single equation. Pupils use the interactive to take the square root of nine and see the graphical representation of the two solutions. Individuals realize that solutions to quadratic equations that are solved by...