Sophia Learning
Sophia: Writing a Linear Equation From a Parallel Line and Point
Students learn how to write a linear equation from a parallel line and a point. The tutorial consists of a detailed example that explores the mathematics concept. [3:56]
Sophia Learning
Sophia: Writing a Linear Equation From a Perpendicular Line and Point
This video discusses how to write a linear equation from a perpendicular line and a point. Students learn about the concept through a detailed example. [3:39]
Sophia Learning
Sophia: Practice With Rotations
Explore how to rotate a geometric object across a coordinate plane with this video lesson. [10:37] Assess learning with a quiz.
Sophia Learning
Sophia: Adding Vectors Using the Tail to Tip Method
Learn how to add vectors using the tail-to-tip method. [6:00]
Virtual Nerd
Virtual Nerd: How Do You Find the Volume of a Sphere?
This tutorial lesson explains how to calculate the volume of a sphere. [4:36]
Virtual Nerd
Virtual Nerd: What Is a Circle?
Take a look at this tutorial to learn about circles and see the different parts of a circle. [3:54]
Virtual Nerd
Virtual Nerd: What Is a Rotation?
Take a look at this tutorial to learn about rotations which are just circular movements. [3:51]
Virtual Nerd
Virtual Nerd: What Are the Endpoints of a Line Segment?
Watch this tutorial to learn about the endpoints of a line segment. [1:18]
Virtual Nerd
Virtual Nerd: What Is a Line Segment?
Take a look at this tutorial to learn about line segments, how to name them, and what the midpoint of a line segment is. [3:13]
Virtual Nerd
Virtual Nerd: What Is an Angle?
Take a look at this tutorial to learn about how an angle is formed, how to name an angle, and how an angle is measured. [4:45]
Virtual Nerd
Virtual Nerd: What Is a Vector?
Vectors have both length and a direction. Follow along with this tutorial to learn about vectors and their parts and also how to name one. [3:09]
Virtual Nerd
Virtual Nerd: What Is the Law of Cosines?
The Law of Cosines helps solve some triangle problems. This video explains several versions of the law of cosines and what they are used for. [9:22]
Virtual Nerd
Virtual Nerd: What Is the Formula for the Area of a Triangle Using Sines?
Learn how to use sines to find the area of a triangle. [5:33]
Randy Thomas
Solving Quadratic Equations With Complex Solutions
This tutorial discusses solving quadratic equations using square roots, completing the square, and the quadratic formula. Problems which previously had no solution can now be solved with the inclusion of the complex number system....
University of New South Wales (Australia)
Unsw: How to Solve Polynomial Equations Involving Complex Numbers
The instructor in this video demonstrates how to use the polar form of a complex number to solve a polynomial equation. [11:07]
Imagine Learning Classroom
Learn Zillion: Prove the Pythagorean Theorem: Using Similar Triangles
In this lesson, you will learn how to prove the Pythagorean Theorem by using similar triangles. [4:54]
Imagine Learning Classroom
Learn Zillion: Visualize Cross Sections of Pyramids
In this lesson, you will learn how to visualize the 2D cross-sections of pyramids by determining the number of faces intersected by a plane. [3:53]
Imagine Learning Classroom
Learn Zillion: Lesson Video for 'Estimate Values on a Graph'
In this lesson, you will learn how to read from a graph by estimating between gridlines. [5:15]
Khan Academy
Khan Academy: Triangles: Proof: Triangle Altitudes Are Concurrent (Orthocenter)
Demostrates how to take any triangle and make it become the medial triangle of a larger triangle. Also explains that the three altitudes of a triangle are concurrent. [10:01]
Khan Academy
Khan Academy: Geometry: Part 1 of Proof of Heron's Formula
Demonstrates how to derive a version of Heron's formula using the Pythagorean Theorem and the formula for the area of a triangle. Applies Heron's formula to solve a sample problem. [10:59]
Khan Academy
Khan Academy: Algebra: Complex Conjugates Example
Video shows how to write the conjugate of a complex number. Also discusses uses of the complex conjugate and shows an example of multiplying complex conjugates. [4:01]
Khan Academy
Khan Academy: Algebra: Adding and Simplifying Radicals
Video showing how to add radicals and then simplify the results. [4:41]
Khan Academy
Khan Academy: Solving and Graphing Linear Inequalities in Two Variables 1
This video demonstrates how to graph y > 5 on a number line and on the coordinate plane. Explains that it doesn't matter what value x is. [2:15]
Khan Academy
Khan Academy: Algebra: Graphing Linear Inequalities in Two Variables 2
This video demonstrates how to graph an inequality with two variables on the coordinate plane. [3:02]