Other
Morgan State: Linear Algebraic Equations and Matrices
This site gives information on linear equations and matrices. Among the topics discussed are the substitution method, Gauss-Jordan Elimination Method, matrix operations, matrix multiplication, and inverse matrices.
J Coffman
Joseph Coffman's Lecture Notes: Organizing Data Into Matrices
Students learn how to organize data into matrices. Topics include scalar multiplication, equality of matrices, and matrix logic. An assessment is included to check for comprehension of the concept.
J Coffman
Joseph Coffman's Lecture Notes: 2 X 2 Matrices, Determinants, Inverses
Learners investigate matrices, determinants, and inverses. Topics include the identity matrix and inverse of a matrix. The resource consists of examples with detailed solutions and a quiz.
Math Planet
Math Planet: Algebra 2: Matrices: How to Operate With Matrices
Provides an explanation, examples, and a video lesson all related to matrices. [5:31]
Khan Academy
Khan Academy: Precalculus: Matrix Row Operations
Determine the matrix that is the result of performing a specific row operation on a given matrix. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Matrix Multiplication
Find a quick, concise explanation of matrix multiplication. Examples are given and clearly explained.
CK-12 Foundation
Ck 12: Introduction to Matrices: Matrices to Represent Data
[Free Registration/Login may be required to access all resource tools.] This lesson defines, organizes, and compares matrices. Includes examples, video, and review problems.
Analyze Math
Analyze Math: The Inverse of a Square Matrix
Learners explore the discrete mathematics topic of matrices. The tutorial demonstrates how to calculate the inverse of a square matrix. The activity includes examples with 2 by 2 and 3 by 3 matrices.
University of Minnesota
University of Minnesota: Math Insight: Multiplying Matrices and Vectors
A clear explanation of how to multiply a matrix by a vector and a matrix by a matrix. A follow-up page provides additional examples.
Purple Math
Purplemath: Scalar and Matrix Multiplication
With several easy-to-understand examples worked out, this lesson demonstrates the steps needed to multiply a matrix by a scalar (a constant). True "Matrix multiplication," where two matrices are multiplied to eachother is also...
Purple Math
Purplemath: Matrix Multiplication/the Identity Matrix
Definitions, examples, and detailed explanation of matrix multiplication and the identity matrix.
Math Medics
S.o.s. Math: Multiplication of Matrices
This tutorial gives students an introduction to matrix multiplication with definitions and examples.
Khan Academy
Khan Academy: Use Matrices to Transform 3 D and 4 D Vectors
Find the result (both algebraically and graphically) of transforming a vector using a transformation matrix. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
OnlineMathLearning.com
Online Math Learning: Multiply a Vector by a Matrix
Examples, solutions, videos, and lessons to help students learn how to multiply a vector (regarded as a matrix with one column) by a matrix of suitable dimensions to produce another vector. Work with matrices as transformations of...
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...
Cool Math
Coolmath: The Identity Matrix
Reference material and practice problems for the identity matrix.
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!
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.
Hofstra University
Hofstra: Matrix Algebra
This site explains what matrix algebra is. Includes examples. It also covers scalar multiples.
Other
Special Matrices
Excellent site with definitions and examples of numerous special matrices including the zero matrix.
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: Dimensions of a Matrix
Find a quick, concise explanation of the dimensions of a matrix. Examples are given and clearly explained.