Instructional Video6:15
Krista King Math

Uniform Motion

9th - 12th Standards
Investigate the rate formula through uniform motion problems. Learners explore these problems as an application of linear systems. The video instructor demonstrates a method to set up and then solve the problem.
Instructional Video5:51
Krista King Math

Solving Systems of Equations with Cramer's Rule

9th - 12th Standards
Show how matrices can be helpful for solving systems of equations. The video illustrates an example of solving a two-variable system utilizing Cramer's Rule. The instructor shows how to find the determinant of each matrix and then uses...
Instructional Video7:23
Krista King Math

Solving Systems of Equations Three Ways

9th - 12th Standards
Which method of solving systems is the best? Individuals watch the same system solved using elimination, then substitution, and finally graphing. They can compare the different methods and see how each method results in the same solution.
Instructional Video5:00
Krista King Math

Ratio and Proportion, Word problems

3rd - 7th Standards
Combine several mathematics concepts as classes solve linear systems. After writing a system of equations involving a proportion, learners then solve the system. A video instructor uses the substitution method and must work...
Instructional Video4:35
Brightstorm

Square Matrices - Concept

9th - 12th Standards
No, matrices are not what mathematicians sleep on. Lesson begins with identifying the dimensions of matrices then moves on to multiply them. It also provides guided practice problems that get progressively more complex.
Instructional Video1:33
Brightstorm

Mixture Problems - Concept

8th - 10th Standards
Mix it up in math class! The video provides an equation hint to be able to setup mixture problems. Two problems are provided as examples on how to use the equation in order to solve mixture type word problems. 
Instructional Video5:17
Curated OER

How Do You Solve and Graph Inequalities from a Word Problem?

8th - 9th
Are you befuddled after reading this word problem? Not only is it a word problem but there are two variables, and not only does it have two variables, but it is an inequality. Don't pull your hair out! Take a deep breath and watch this...
Instructional Video4:50
Curated OER

What is a Matrix?

9th - 11th
Matrix, matrices, what? The instructor demonstrates how to set up a matrix and explains the rows and columns. There are many uses for matrices and this is just the beginning.
Instructional Video1:34
Curated OER

What Are the Ways You Can Solve a System of Linear Equations?

8th - 11th
Confronted with a system of equations? This tutorial briefly describes the three ways systems of equations can be solved. Substitution, graphing, and the elimination method are all covered. The only thing this video is missing is example...
Instructional Video2:17
Curated OER

How Do You Check Your Answer When You Have Two Equations?

7th - 9th
Show your class how to check their answers for a system of linear equations. This video clarifies how to plug in answers and solve each equation. This is a straightforward video that could be useful to learners as the work on their...
Instructional Video5:55
Curated OER

How Do You Solve a System of Equations Using Substitution if One Equation is a Quadratic?

8th - 11th
Two equations. Wait! They don't look like the same kind of equations. How do you solve a system of equations when one equation is linear and the other is a quadratic? Watch this video as the instructor illustrates how to use the...
Instructional Video1:15
Curated OER

What's a Consistent Independent System of Equations?

8th - 11th
Define a system of equations with only one solution? Sure! If you have a system of equations with only one solution you'll find that it results in an ordered pair (2,2). This means that those equations intersect at only one point.
Instructional Video0:05
Curated OER

What's Another Way of Solving a System of Equations Using the Elimination by Multiplication Method?

8th - 9th
Another look at solving systems of equations by using the elimination method. In this process, the instructor first uses the distributive property to multiply one of the equations to set it up for the elimination step. Yes, there are...
Instructional Video5:02
Curated OER

How Do You Solve a System of Equations Using the Elimination by Multiplication Method?

8th - 11th
The elimination method is so called because the objective is to eliminate one of the variables to solve for the remaining variable. There is an extra step in this system of equations as the original equations are not similar enough. So...
Instructional Video5:04
Curated OER

How Do You Solve a System of Equations Using the Elimination by Subtraction Method?

8th - 11th
Check out this video and see how the instructor explains how to solve a system of equations by using the elimination method. There are several steps in solving this equation: multiplying the equation by negative one, subtracting a...
Instructional Video3:49
Curated OER

Graphing Systems of Equations - Algebra Help

8th - 12th
One way to solve a system of equations is to graph two equations and find the point of intersection. This method is demonstrated on a whiteboard to help your mathematicians understand the concept. An easy way to check your solution is...
Instructional Video3:59
Curated OER

How Do You Solve a System of Equations Using the Substitution Method?

6th - 12th
Watch this video to learn how to find the solution to a system of equations with the substitution method! A teacher will lead you through each step necessary, explaining her steps and the reasoning behind her decisions. After watching...
Instructional Video0:07
Curated OER

How Do You Solve a Word Problem Using the Elimination by Subtraction Method?

6th - 12th
Use word problems to teach systems of equations! The instructor in this video demonstrates how to solve a word problem using a system of equations and the elimination by subtraction method. She goes through each step, carefully...
Instructional Video2:59
Curated OER

How Do You Check Your Answer When You Have Two Equations?

6th - 12th
Show your class how to check their answers for a system of linear equations. This video clarifies how to plug in answers and solve each equation. This is a straightforward video that could be useful to learners as the work on their...
Instructional Video8:15
Virtual Nerd

How Do You Find the Intersection of Percent Data by Using a Venn Diagram?

6th - 12th
When you first read this word problem it seems pretty daunting. The instructor explains how to identify the variables, how to convert percentage to whole numbers, and how to set up the problem and solve it. She uses a Venn diagram as a...
Instructional Video5:27
Curated OER

What is a Matrix?

6th - 12th
Matrix, matrices, what? The instructor demonstrates how to set up a matrix and explains the rows and columns, the dimensions. There are many uses for matrices and this is just the beginning.
Instructional Video6:23
FuseSchool

Simultaneous Equations by Elimination

9th - 12th
Take a methodical approach—solve systems one at a time. Young mathematicians learn to solve simultaneous equations (system of equations) algebraically. The preferred method here is elimination.
Instructional Video6:20
Krista King Math

System of Three Equations

9th - 12th Standards
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...
Instructional Video5:22
Krista King Math

Number Word Problems as a System of Two Equations

9th - 12th Standards
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...