Khan Academy
Khan Academy: Algebra: Multiply and Simplify Radical Expressions Part 1
Video showing how to multiply radicals and then simplify the results by using fractional exponents and the rules of exponents. [4:25]
Khan Academy
Khan Academy: Geometry: Proof: Opposite Sides of Parallelogram Congruent
Demonstrates how to prove that the opposite sides of a parallelogram are congruent based on knowledge of the special angles created when parallel lines are cut by a transversal and the triangle congruency postulates. [8:30]
Khan Academy
Khan Academy: Geometry: Part 2 of the Proof of Heron's Formula
Completes the proof of Heron's formula that was begun in the video, "Part 1 of Proof of Heron's Formula." [12:08]
Khan Academy
Khan Academy: Algebra: Subtracting and Simplifying Radicals
This resource explains how to subtract radicals and then simplify the results. [5:45]
Khan Academy
Khan Academy: Graphing a Linear Equation
This video demonstrates how to graph a linear equation in two variables by creating a table of x, y values to use as coordinates for the graph of the line. [13:09]
Khan Academy
Khan Academy: Algebra: Complex Numbers: Introduction to I and Imaginary Numbers
Video introduces i as the imaginary unit, gives two versions of the definition for i, and then shows what various powers of i equal. [5:20]
Khan Academy
Khan Academy: Ways to Cross Section a Cube
Explores the variety of two-dimensional cross-sections that can be obtained by slicing a cube. [7:23]
Khan Academy
Khan Academy: Geometry: Angles Formed by Parallel Lines and Transversals
Identifies which angles are congruent when parallel lines are cut by a transversal. [7:07]
Khan Academy
Khan Academy: Geometry: Proof: Opposite Angles of Parallelogram Congruent
This video tutorial demonstrates how to prove that the opposite angles of a parallelogram are congruent based on knowledge of the special angles created when parallel lines are cut by a transversal. [4:08]
Khan Academy
Khan Academy: Geometry: Euler's Line Proof
Proves that the circumcenter, orthocenter, and centroid all lie on the same line, the Euler line. Proof relies on understanding of properties of similar triangles and properties of special parts of a triangle. [9:50]
Khan Academy
Khan Academy: Geometry: Proof: Diagonals of Parallelogram Bisect Each Other
Demonstrates how to prove that the diagonals of a parallelogram bisect each other based on knowledge of the special angles created when parallel lines are cut by a transversal and the triangle congruency postulates. [9:06]
Khan Academy
Khan Academy: Displacement, Velocity and Time: Solving for Time
A simple example of solving for time given the distance and rate. [9:34]
Khan Academy
Khan Academy: Properties of Matrix Multiplication: Zero Matrix
Explains what the zero matrix is and how it is used in matrix multiplication. [4:41]
Khan Academy
Khan Academy: Matrix Multiplication: Identity and Zero Matrix Equation
Models a problem where one must determine whether unknown matrices are zero or identity to make an equation true. [3:58]
Khan Academy
Khan Academy: Properties of Matrix Multiplication: Intro to Identity Matrix
Just as any number remains the same when multiplied by 1, any matrix remains the same when multiplied by the identity matrix. [7:59]
Khan Academy
Khan Academy: Vector Addition & Magnitude: Magnitude of Vector Sums
Explains some interesting properties of the magnitude of vector sums. [5:30]
Khan Academy
Khan Academy: Components of Vectors
Explains how to find the x- and y-components of a vector given its graph. [3:17]
Khan Academy
Khan Academy: Precalculus: Visual Representation of Transformation From Matrix
Demonstrates how to represent a 2x2 matrix transformation on a plane. [6:08]
Other
Grand Valley State University: Basics of Polynomials
This video discusses types of polynomials, like terms, leading coefficients, degree of polynomial, and combining like terms. A variety of polynomials are analyzed to see what their different characteristics are. [5:47]
Other
Ten Marks Amazon: Using Representations of Linear Functions (F If.9)
This lesson explains how to compare properties of linear functions represented in different forms and how to use different representations of linear functions to solve problems. [6:25]
Other
Comparing Properties of Functions Represented in Different Forms (F If.9)
This lesson explains how to compare properties of functions when they are represented in different forms. [7:49]
Other
Comparing Properties of Quadratic Functions Given in Different Forms
In this lesson, the properties of two quadratic functions that are represented in different forms are compared. [4:09]
Other
Wo wmath.org: Comparing Functions in Different Forms
In this lesson, several functions are represented in different ways and their properties are compared. Includes seven questions on intercepts, domains, rates of change, etc. [9:07]
Virtual Nerd
Virtual Nerd: Algebra 2: What Are Function Operations?
Explains what function operations are, presents the rules for each of the four arithmetic operations, and gives examples for each rule. [6:12]