Krista King Math
Finding Values and Domain and Range from a Graph
The abstract notion of domain and range can be troublesome. A math lesson explains the concept of determining domain and range from a graph. The instructor makes clear connections between the graph and the numeric values. There are...
Krista King Math
Which Functions Pass the Vertical Line Test?!!
What is a function? Teachers have been asking pupils this question from the time they started their algebra careers. A helpful video walks through the process of using the vertical line test to determine a function while...
Krista King Math
Calculus - Functions
An understanding of the basics of a function is key to success in upper-level math courses! A video describes in detail the important aspects of functions including domain, range, combinations, compositions, and vertical line test.
Krista King Math
Turning Word Problems Into Equations
Time to test your scholars' listening skills! Demonstrate how to write equations from verbal sentences. After introducing key terms, the instructor completes two examples and then explains how to turn words into operations to write the...
Krista King Math
Intermediate Value Theorem to Prove a Root in an Interval
Viewers os this short video learn how to prove that a root exists in a given interval without having to determine the actual value of the root. Applying the Intermediate Value Theorem is most helpful in this situation.
Krista King Math
Finding the Domain by Investigating Continuity
Connect domains of functions to continuity with a video that first shows how to find the domain of a cube root function. It then explains how this domain relates to the continuity of the function.
Krista King Math
How to Find the Limit Using Squeeze Theorem
Squeeze a video into your schedule that explains how to use the Squeeze Theorem to determine limits of a function. The video works through an example involving a trigonometric function.
Krista King Math
How to Write Small and Big Numbers in Scientific Notation
Now you don't have to write all those zeros. Viewers of this video learn how to write large and small numbers in scientific notation. The video covers two examples for each type.
Krista King Math
How to Easily Divide Scientific Notation
Dividing with scientific notation made easy. In the video, scholars see how to use scientific notation to divide numbers. Along the way, they learn how to identify and convert values in scientific notation.
Krista King Math
Completing the Square with Complex Roots
Explore completing the square as a process for finding complex roots of quadratic equations with a video lesson that pulls together several concepts related to quadratic equations. The example shows how to complete the square with a...
Krista King Math
Completing the Square
Extend your classes' experience with solving quadratic equations. For equations that are not factorable, an alternative method is necessary. The video lesson shows how to complete the square as a method of solving.
Krista King Math
Factoring the Sum of Cubes
Examine the patterns of polynomial factoring with your classes. The video describes the specific process of factoring the sum of cubes. The instructor demonstrates two examples with both variables and coefficients.
Krista King Math
Factoring the Difference of Cubes
Demonstrate the pattern of polynomial factoring using a video lesson. The instructor discusses the pattern of factoring the difference of cubes as she completes two practice problems. The examples include both variables and coefficients.
Krista King Math
Factoring by Grouping
Connect your classes understanding of factoring trinomials to the process of factoring by grouping with a video that shows pupils how to factor a polynomial with four terms by grouping the terms in pairs and finding the GCF....
Krista King Math
Multiplying Multivariable Polynomials
Combine operations when working with polynomials. The video examples incorporate both multiplication and subtraction of polynomials. The polynomials also have multiple variables to add to the complexity.
Krista King Math
Dividing Polynomials
Show learners how to apply their knowledge of long division to polynomials. The video instructor explains how to divide polynomials using the same procedure of long division learned in previous grades. The examples include dividing by a...
Krista King Math
System of Three Equations
How does solving a system of three equations compare to solving two-variable equations? The video tutorial shows how to utilize the same methods of substitution and elimination to solve a system of three equations. The instructor solves...
Krista King Math
Number Word Problems as a System of Two Equations
Here's a video that model how to apply systems of equations to solving number word problems. Pupils learn problem solving strategies to writing equations to represent number word problems. After writing the equations, the instructor...
Krista King Math
System of Two Equations with Subscripts
Show how variables with subscripts are equivalent to those without through a video that shows an example of a linear system with subscripted variables. The instructor uses elimination to solve the system.
Krista King Math
Elimination to Solve a System of Two Equations
Here's a video that demonstrates the elimination method of solving linear systems with two examples. One example is set up and ready for elimination and the other requires multiplying one equation.
Krista King Math
Distance Between Two Points
How does the Pythagorean Theorem become the distance formula? The video instructor begins by explaining the application of the distance formula. She then shows graphically how the distance formula is just an extension of the Pythagorean...
Krista King Math
Graphing Parabolas
Explore graphing quadratic functions by writing them in vertex form. Learners use their skills of completing the square to rewrite standard form in vertex form. They recognize key features in the equation and transfer them to the graph,...
Krista King Math
Multivariable Equations
Build fluency with manipulating equations with a video lesson that demonstrates the process of solving for different variables within an equation. The instructor shows three examples with a different variable isolated in each, which...
Krista King Math
Abstract Fractional Equations
Viewers of this short video examine abstract equations with fractional expressions and learn to find a least common multiple to eliminate denominators. They then see how to manipulate the equation to isolate the variable of interest.