Brian McLogan
Solving using the quadratic equation - Math test answers - Math help
👉Learn how to solve quadratic equations by factoring when a is equal to 1. A quadratic is an algebraic expression having 2 as the highest power of its variable(s). To factor an algebraic expression means to break it up into factors...
Let's Tute
Irrational Numbers and Proof That Root Of 2 is Irrational
In this video of Algebra Real Numbers you will learn about Irrational numbers and how to proof that root of 2 is rational
Brian McLogan
Simplify Radicals Simplify the Square Root of a Number
👉 Learn how to find the square root of a number. To find the square root of a number, we identify whether that number which we want to find its square root is a perfect square. This is done by identifying a number which when raised to...
Curated Video
Comparing Irrational and Rational Numbers
In this video, we demonstrate the process of lining up decimals and comparing digits to determine which number is greater. We discuss the concept of irrational numbers continuing on forever without repeating and the use of symbols to...
Professor Dave Explains
Square Roots, Cube Roots, and Other Roots
An overview of roots as a concept.
Brian McLogan
How to evaluate the limit of the square root function
How to evaluate the limit of the square root function
Khan Academy
Solving Quadratic Equations by Square Roots, Algebra II
Introducing square roots into the quadratic equation mix, Sal addresses the ways viewers might solve the problems, both correctly and incorrectly. The video is an integral step in not only Sal's algebra series but also in developing math...
Khan Academy
Square Roots And Real Numbers, Pre-Algebra
Sal works through several problems involving rational and irrational numbers and shows how to find the difference. This video is a good stepping stone for those preparing to take on more challenging algebra work.
Khan Academy
SAT Prep: Test 2 Section 6 Part 2
Reviewing the last problem from the previous video because he feels that he "rushed it," Sal again explains the concept of ratios as it applies to problem 6 on the practice SAT (page 472 in The Official SAT Study Guide). Additional...
Curated OER
SAT Prep: Test 8 Section 5 Part 4
If your math students are having a hard time with graphing and slopes, this video could be a great resource as they prepare for the SAT. Sal takes care in explaining his thought process, making sure where to note different strategies to...
Khan Academy
SAT Prep: Test 6 Section 3 Part 3
Continuing problem 7 from the previous video, Sal takes students through what he describes as "a common SAT problem" involving geometric lines and figures. Additional problems deal with sequences, cross-multiplication, and measuring...
Khan Academy
SAT Prep: Test 8 Section 5 Part 2
Sal again makes the SAT look effortless, and yet students will follow his mathematical processes with ease. Problems range in difficulty, from basic algebra equations to more complicated geometric figures.
Khan Academy
SAT Prep: Test 5 Section 7 Part 4
Spending more than half of the video readdressing the nuances in problem 13 (previously discussed in the last video), Sal ensures that students understand the tricky word problem by going through each of the multiple choice answers....
Khan Academy
SAT Prep: Test 8 Section 5 Part 3
Have a blast with Sal as he solves these SAT practice questions! He enjoys himself with visualization and combination problems, showing not only how to solve the problems but to see math as a riddle rather than a threat.
Khan Academy
SAT Prep: Test 7 Section 8 Part 2
Continuing his SAT review session, Sal explores problems with slopes, linear equations, and congruent angles. He begins problem 10 (geometry) but finishes the problem in the next video.
Khan Academy
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...
Khan Academy
Understanding Square Roots, Pre-Algebra
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....
Flipped Math
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....
Corbett Maths
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,...
Corbett Maths
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...
Flipped Math
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...
TED-Ed
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.
Corbett Maths
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...
PBS
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...