Brainwaves Video Anthology
Marc Brackett - Permission to Feel
Marc Brackett, Ph.D., is the Founder and Director of the Yale Center for Emotional Intelligence and a Professor in the Child Study Center of Yale University. He is the lead developer of RULER, an evidence-based approach to social and...
Curated Video
Solving Word Problems on Coordinate Planes with the Pythagorean Theorem
In this video, the teacher explains how to solve word problems involving coordinate planes using the Pythagorean theorem. They demonstrate how to create right triangles on a coordinate plane and apply the Pythagorean theorem to find the...
Curated Video
Creating Right Triangles on a Coordinate Plane
In this video, the teacher explains how to create a right triangle on a coordinate plane using two points that form a diagonal line segment. They review the properties of right triangles and the Pythagorean theorem, and demonstrate...
Curated Video
Using the Distance Formula to Verify Points on a Circle
In this video, the teacher explains how to verify if a point is part of a specific circle by using the distance formula. They demonstrate how to calculate the distance between two points by substituting values into the formula and then...
Curated Video
Using the Area of Squares Proof to Relate Side Lengths of a Right Triangle
In this lesson, students will learn about the relationship between the side lengths of a right triangle using the area of squares proof. They will understand that the sum of the areas of the squares formed by the two legs of a right...
Professor Dave Explains
The Distance Formula: Finding the Distance Between Two Points
A derivation of the distance formula.
Curated Video
Finding Distances Between Points on a Plane Using the Pythagorean Theorem
This video explains how to find the distance between two points on a plane without using a measuring tool. It introduces the Pythagorean theorem and demonstrates how to create a right triangle using the given points. By applying the...
Khan Academy
The Pythagorean Theorem Intro
This video, the first in a series on the Pythagorean theorem, introduces the formula for discovering the measurement of a side of a right triangle. The material is introduced and explained in a straightforward and easy-to-understand...
Khan Academy
Pythagorean Theorem II, Right Triangles and Trigonometry, Geometry
This lecture, the second in a series on the Pythagorean Theorem, delves into more complex problems. Primarily, it examines the process of finding the value of a hypotenuse. It is beneficial because the example problem is one in which the...
Khan Academy
30-60-90 Triangles II
This is the fourth video in a series in which the instructor continues a discussion of the Pythagorean theorem. It focuses on calculations involving right triangles with 30—and 60-degree angles.
Khan Academy
Pythagorean Theorem II, Right Triangles and Trigonometry, Geometry
This lecture, the second in a series on the Pythagorean Theorem, delves into more complex problems. It primarily examines the process of finding the value of a hypotenuse. The example problem is beneficial because the solution is not...
Khan Academy
Intro to 30-60-90 Triangles, Right Triangles and Trigonometry, Geometry
As the fourth part of a series on the Pythagorean Theorem, Sal continues an exploration of the ways to calculate the length of sides of a right triangle using algebra. He also used this theorem to solve problems involving a right...
Curated OER
Intro to the Trigonometric Ratios
This video introduces the basics of trigonometry. It starts by defining a right triangle and showing two different examples of finding the ratios of sine, cosine, and tangent using the SOH-CAH-TOA mnemonic. This resource could be used as...
Khan Academy
Pythagorean Theorem, Right Triangles and Trigonometry, Geometry
In this video, Sal introduces the Pythagorean Theorem to viewers, crossing into the realm of geometry. He uses several examples, including right triangles, to illustrate the applications and uses of the Pythagorean Theorem.
Khan Academy
SAT Prep: Test 5 Section 3 Part 1
Sal starts a new set of practice SAT problems in this video, starting on page 652 of The Official SAT Study Guide. Problems involve fractions and ratios, simplifying equations, and finding the perimeter of given coordinates on a plane.
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 5 Section 9 Part 4
Graphing skills are a focus of this video, making it ideal for students who have a hard time using slopes and functions. Additional problems involve visualization, geometric figures, and algebraic factoring.
Khan Academy
Distance Formula, Analytic Geometry, Geometry
Explaining the distance formula as "an application of the Pythagorean Theorem" might relieve some of your young mathematicians who are scratching their heads at all the new concepts. Sal demonstrates how to take the distance between any...
Khan Academy
SAT Prep: Test 7 Section 2 Part 1
Sal picks up the pace in this video, going through problems 1-7 on page 774 of The Official SAT Study Guide. Basic algebra, arithmetic, and geometry problems start out this section, allowing students to build up some steam before hitting...
Khan Academy
SAT Prep: Test 3 Section 4 Part 2
Sal explains how helping his young cousins with their math skills inspired him to make this series of videos, so he can help a bunch of people pass the SAT. In this video, he covers exponents, quadratics, and parabolas in problems 5-9 on...
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.