Khan Academy
Khan Academy: Trigonometry: Navigation Word Problem
Video showing how to solve a navigation word problem with speeds and distances using trigonometry. [8:00]
Khan Academy
Khan Academy: Algebra: Alternate Solution to Ratio Problem
A step-by-step demonstration on an alternate method for how to solve a ratio problem algebraically with cross multiplication. [7:02]
Khan Academy
Khan Academy: Calculus: Approximating Functions With Polynomials (Part 3)
Video lesson using a Maclaurin series to approximate an exponential function by using a polynomial expansion. Provides two different definitions for e. [7:13]
Khan Academy
Khan Academy: Algebra: Solving Radical Equations 1
Video solving an equation with a square root by isolating the square root and then squaring both sides of the equation. Also checks the solution to make sure it holds true in the original equation. [2:14]
Khan Academy
Khan Academy: Algebra: Algebra Ii: Functions, Combinatorics
Video solving problems 60 to 65 of the California Standards Test for Algebra II. Concepts covered include negative exponents, square root equations and inequalities, permutations, and probability. [11:25]
Khan Academy
Khan Academy: Algebra: Parallel Lines 3
This video demonstrates how to determine if lines are parallel given the equations. There are three equations listed but they are not all in slope-intercept form. Practice problems available. [2:42]
Khan Academy
Khan Academy: Algebra: Basic Linear Function
This video demonstrates how to take a word problem and write a linear function that represents the problem. This video is also found in the strand Algebra: Functions. [2:42]
Khan Academy
Khan Academy: Algebra: Multiplying Polynomials
Video demonstrates how to use the distributive property to multiply a binomial and a trinomial. Also shows how to multiply using a vertical format. Practice problems available. [5:46]
Khan Academy
Khan Academy: Differential Calculus: Limit Examples (Part 2)
A continuation of the video Limit Examples (Part 1), also from the Khan Academy. Addresses the case where the limit of a function is equal to infinity. Examples are explained both graphically and tabularly. [6:58]
Khan Academy
Khan Academy: Algebra: Dividing Multivariable Polynomial With Monomial
Video demonstrates how to divided a multivariable trinomial by a multivariable monomial. [3:14]
Khan Academy
Khan Academy: Trigonometry: Determing the Equation of a Trigonometric Function
Video about finding the equation of a trigonometric function from its graph. Two examples are sine functions and one example is a cosine function [9:52]
Khan Academy
Khan Academy: Differential Calculus: Taking Derivatives: Power Rule Introduction
Video lesson about rules for finding the derivative by generalizing examples. Includes the power rule and addition rule and uses these to find the derivative of different polynomial functions. [9:50]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Subtraction 3: Borrowing or Regrouping
A video covering a review of subtraction using a number line, followed by subtraction of numbers up to three-digits by using borrowing and regrouping. Practice problems available. [18:26]
Khan Academy
Khan Academy: Algebra: Algebra Ii: Functions and Probability
Video solving problems 70 to 75 of the Californa Standards Algebra II Test. Concepts covered include arithmetic sequences and series, writing the expression for a composition of functions and evaluating the composition of functions,...
Khan Academy
Khan Academy: Trigonometry: Using Trig Functions
Video using the basic trigonometric functions to find the length of a side in a right triangle. Examples are given with angle measures in radians. Includes link to additional practice problems. [10:03]
Khan Academy
Khan Academy: Algebra: Applying Quadratic Functions 1
Video solving an application problem that uses a quadratic function to represent a cable that connects two towers. Problem is solved by finding the vertex of the parabola and applying that information. [4:39]
Khan Academy
Khan Academy: Algebra: Linear Equations in Point Slope Form
This video gives several examples of how to write a linear equation in point-slope form given two points on the line. This video is also found in the strand Algebra: ck12.org. [9:38]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Dividing Fractions
This video explains how to divide two fractions. Practice problems are available. [8:59]
Khan Academy
Khan Academy: Trigonometry: Proof: Sin(a+b)=(cos A)(sin B) + (Sin A)(cos B)
Video demonstrating the proof for the formula for the sine of the sum of two angles. Includes link to additional practice problems. [9:48]
Khan Academy
Khan Academy: Trigonometry: Trig Identities Part 2
Video deriving the double angle formulas for sine and cosine as well as the start of finding the cosine of the opposite of an angle. Reviews basic trigonometric ratio definitions and some basic trigonometric identities. [9:57]
Khan Academy
Khan Academy: Algebra: Simplifying Expressions With Exponents 3
Video finding the volume of a cube with sides that are an algebraic expression involving exponents. [2:31]
Khan Academy
Khan Academy: Geometry: Similar Triangles
Explains what it means for two triangles to be similar. Diagram of similar triangles is created with two parallel lines cut by two transversals. [9:34]
Khan Academy
Khan Academy: Algebra: Ca Algebra I: Number Properties and Absolute Values
An explanation of the first seven problems on the California Algebra I released test. [12:02]
Khan Academy
Khan Academy: Algebra: Equations of Sequence Patterns
This video demonstrates how to identify the pattern in a sequence and then create an equation that demonstrates how to find any given number in that sequence. [8:36]