Khan Academy
Khan Academy: Calculus: Solid of Revolution (Part 5)
Video lesson introducing how to use definite integrals and the shell method to find the volume of a solid rotating about the y-axis. [9:29]
Khan Academy
Khan Academy: Trigonometry: More Trig Graphs
Video about translating between the graph and equation of trigonometric functions. Examples consist of writing the equation a sine function from its graph and graphing a cosine function from its equation. [5:13]
Khan Academy
Khan Academy: Algebra: Systems of Equations
This video demonstrates how to solve systems of linear equations in two variables using the elimination method. There are three sample problems shown. [9:57]
Khan Academy
Khan Academy: Algebra: Two Passing Bicycles Word Problem
This video demonstrates how to apply systems of equations to a word problem about two people passing each other on bicycles. The problem also involves constant speeds and distances. [5:39]
Khan Academy
Khan Academy: Statistics: Binomial Distribution 1
Video reviewing binomial probability, including binomial coefficients, and leading up to binomial distributions. An example with the probabilities of the different number of heads in five flips of a coin. Video is also included in the...
Khan Academy
Khan Academy: Algebra: Matrices: Matrix Multiplication (Part 2)
This lesson goes through three examples of matrix multiplication. Explains how the dimensions of matrices affect whether or not the matrices can be multiplied, how to determine if they can be multiplied, and what size the resulting...
Khan Academy
Khan Academy: Multivariable Calculus: Gradient of a Scalar Field
Video finding a gradient in three dimensions by using an example about temperature in a 3-D room. Graph of the vector field found in the solution is shown. [10:54]
Khan Academy
Khan Academy: Trigonometry: Trigonometric Identities
Video showing how to derive two basic trigonometric identities. Includes link to additional practice problems. [9:10]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Level 4 Subtraction
This video teaches subtraction of up to five-digit numbers using borrowing or regrouping. Practice problems are available. [8:47]
Khan Academy
Khan Academy: Calculus: Solid of Revolution (Part 4)
Video lesson using the washer method of integration to find the volume of a specific solid of revolution formed by two curves. [8:22]
Khan Academy
Khan Academy: Algebra: Hairier Slope of a Line
This video demonstrates how to calculate the slope of a line given two points. The video uses the slope formula and the two points given include positive and negative fractions as coordinates. Practice problems available. [6:32]
Khan Academy
Khan Academy: Algebra: Passed Bike Word Problem
This video demonstrates how to set up and solve a system of equations in order to answer a word problem based on rates and elapsed time. [5:54]
Khan Academy
Khan Academy: Algebra: Age Word Problems 2
This video demonstrates how to solve word problems related to a person's age by setting up and solving equations based on the information given in the problem. There are two sample word problems. [9:57]
Khan Academy
Khan Academy: Calculus: 2011 Calculus Ab Free Response #1 Parts B, C, & D
Video shows how to use the definite integral of the velocity function of a particle to determine the distance traveled, average velocity and position of the particle at a given time. [14:37]
Khan Academy
Khan Academy: Algebra: Passing Trains
This video demonstrates how to solve a systems of equations word problem related to the rates of passing trains. The problem involves finding a rate in meters/second and setting up and solving a system of equations. [9:07]
Khan Academy
Khan Academy: Trigonometry: Graphs of Trig Functions
Video exploring the graphs of the basic trigonometric functions. Effects of changes in the equation of the sine function to the period and the amplitude of the graph are shown. Includes link to additional practice problems. [10:17]
Khan Academy
Khan Academy: Calculus: Solid of Revolution (Part 1)
Video lesson introducing how to use definite integrals and the disk method to find the volume of a solid rotating about the x-axis. Reviews what a definite integral is. [10:05]
Khan Academy
Khan Academy: Algebra: Functions (Part 4)
Video showing how to solve for a function given a composition of functions and one of the functions. Also shows how the problem can be solved using the different multiple choice options. Includes link for additional practice at the top...
Khan Academy
Khan Academy: Differential Calculus: More Limits
Video of three example problems dealing with limits. Addresses the case in which the left- and right-hand limits do not agree. Uses the limit as x approaches 0 of (sin x)/x to determine limits of other functions. [13:09]
Khan Academy
Khan Academy: Trigonometry: Using Trig Functions Part Ii
Continuation of video lesson using the basic trigonometric functions to determine unknown side lengths of a right triangle. Example shows using trigonometry as well as the Pythagorean Theorem to find the length of the third side of the...
Khan Academy
Khan Academy: Algebra: Problem Solving Word Problems 2
A video that demonstrates how to set up and solve systems of equations in order to answer word problems. [12:20]
Khan Academy
Khan Academy: Algebra: Simplifying Radical Expressions 3
Video simplifying the cube root of an algebraic expression by identifying perfect cubes. [3:09]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: 2 Digit Subtraction
This video shows subtraction of two-digit numbers and place value to tens. [2:54]
Khan Academy
Khan Academy: Algebra: Level 1 Multiplying Expressions
Demonstrates how to multiply two binomials by applying the distributive property. Four different examples are worked out. Practice problems available. [7:58]