Analyze Math
Analyze Math: Matrix Addition and Multiplication
Learners explore the discrete mathematics topic of matrices. The tutorial demonstrates how to add and multiply matrices. Some topics explored are scalar multiplication, multiplication of two matrices, square matrices, and addition of two...
CK-12 Foundation
Ck 12: Inverse Matrices
[Free Registration/Login may be required to access all resource tools.] A collection of resources that teaches students that the zero and identity matrices play a role in matrix addition and multiplication similar to the role of 0 and 1...
CK-12 Foundation
Ck 12: Determinants
[Free Registration/Login may be required to access all resource tools.] Understand that the zero and identity matrices play a role in matrix addition and multiplication similar to the role of 0 and 1 in the real numbers. The determinant...
CK-12 Foundation
Ck 12: Algebra: Inverse Matrices
[Free Registration/Login may be required to access all resource tools.] This lesson covers finding the inverse of a 2 x 2 matrix. Students can look at guided notes and then attempt practice problems.
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: 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: The Inverse of a Square Matrix [Pdf]
Students explore the inverse of a square matrix. Topics examined are the inverse of a real number, using inverses to solve systems, and the determinant of a 2 x 2 matrix. Class notes and examples are included.
Wolfram Research
Wolfram Math World: Square Matrix
This resource gives a brief definition of a square matrix, click on the highlighted terms for more information on matrices.
Wolfram Research
Wolfram Math World: Zero Matrix
This site from MathWorld.com briefly explains what a zero matrix is and contains links to related topics.
Other
Special Matrices
Excellent site with definitions and examples of numerous special matrices including the zero matrix.
Sophia Learning
Sophia: Using Determinants to Classify 3x3 Matrices: Lesson 2
This lesson demonstrates how the determinant of a 3x3 matrix can be used to tell whether or not the matrix represents a dependent linear system, an inconsistent linear system, or neither.
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."
Sophia Learning
Sophia: Using Determinants to Classify 3x3 Matrices: Lesson 3
This lesson demonstrates how the determinant of a 3x3 matrix can be used to tell whether or not the matrix represents a dependent linear system, an inconsistent linear system, or neither.
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: Determinant of a Matrix
Find a quick, concise explanation of how to find the determinant of a matrix. Several examples are given and clearly explained.
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.
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.