Cool Math
Coolmath: The Identity Matrix
Reference material and practice problems for the identity matrix.
Cool Math
Coolmath: Multiplying Matrices
This CoolMath resource will help students understand how to multiply matrices.
Cool Math
Coolmath: Scalar Multiplication
This CoolMath resource will help students understand the concept of scalar multiplication.
Cool Math
Coolmath: Inverse Matrices
You can add and subtract matrices, multiply a matrix by a scalar, and multiply two matrices. So, what about division? Well, there isn't a division process for matrices. See this example for how to get around this problem!
Cuemath
Cuemath: How to Solve Matrices
In this mini-instructional activity, we will explore the world of matrices by finding the answers to questions like how to solve systems of equations with matrices, how to solve matrices, and matrix operations with examples and formulas...
Math Notes and Math Tests
Pre Calculus Notes: Operations With Matrices [Pdf]
Students explore operations with matrices. Topics examined are matrix addition, scalar multiplication, matrix multiplication, and identity matrices. Class notes and examples are included.
Stefan Warner and Steven R. Costenoble
Finite Mathematics & Applied Calculus: Graphing Calculator Pivoting Program
The calculator program allows learners to pivot on any entry in a matrix and perform simplification.
Other
Special Matrices
Excellent site with definitions and examples of numerous special matrices including the zero matrix.
Sophia Learning
Sophia: Matrix Multiplication: Lesson 3
This lesson introduces matrix multiplication, distinguishes it from multiplying by a scalar, and provides examples of the operation. It is 3 of 2 in the series titled "matrix multiplication."
Sophia Learning
Sophia: Matrix Multiplication: Lesson 5
This lesson introduces matrix multiplication, distinguishes it from multiplying by a scalar, and provides examples of the operation. It is 5 of 2 in the series titled "Matrix Multiplication."
Sophia Learning
Sophia: Multiplying Matrices by Scalar Values: Lesson 3
This lesson explains how to multiply a matrix by a scalar. It is 3 of 5 in the series titled "Multiplying Matrices by Scalar Values."
Sophia Learning
Sophia: Multiplying Matrices by Scalar Values: Lesson 1
This lesson explains how to multiply a matrix by a scalar. It is 1 of 5 in the series titled "Multiplying Matrices by Scalar Values."
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Add and Subtract Matrices
Find a quick, concise explanation of how to add and subtract matrices. Step by step examples are included to help you understand how to find the sum or difference of matrices of the same dimensions.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Compatible Matrices
Find a quick, concise explanation of how to compare matrices to see which can be multiplied. Several examples are given to illustrate which matrices can and can not be multiplied.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Identity Matrix
Find a quick, concise explanation of an identity matrix. An example is given and clearly explained.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Square Matrix
Find a quick, concise explanation of what a square matrix is. An example is given and clearly explained.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Matrices
Find a quick, concise explanation of matrices. Examples are given and clearly explained.
ClassFlow
Class Flow: Adding and Subtracting Matrices
[Free Registration/Login Required] This lesson covers adding, subtracting matrices and equivalent matrices.
ClassFlow
Class Flow: Inverse Matrices and Systems
[Free Registration/Login Required] This flipchart shows students how to solve systems of equations using inverse matrices for real-world problem situations.
Interactive Mathematics
Interactive Mathematics: Matrices
This over view of matrices begins with an application to electronics using circuit equations. Examples are provided to demonstrate types of matrices, the identity matrix, addition and scalar multiplication of matrices.
Interactive Mathematics
Interactive Mathematics: Multiplication of Matrices
A demonstration of matrix multiplication is presented through several detailed examples. Explanations of how the commutative law works only on the identity and inverse matrices are also included.