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Khan Academy
Khan Academy: Matrix Equations: Addition and Subtraction
Solve equations where the unknown is a matrix, by using matrix addition and subtraction. Students receive immediate feedback and have the opportunity to try questions repeatedly or receive hints.
Math Medics
S.o.s. Math: Introduction and Basic Operations
This tutorial gives students an introduction to matrix addition with definitions and examples.
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.
Stefan Warner and Steven R. Costenoble
Finite Mathematics & Applied Calculus: The Matrix of a System and Row Operations
The tutorial examines the matrix of a system and row operations. Students learn about the concepts through class notes, examples, and practice problems. Topics include a system of linear equations and augmented matrices. Review exercises...
Texas Instruments
Texas Instruments: Matrices and Vectors
In this activity, students learn to create and edit a matrix using the matrix editor. They use various features in the calculator to perform elementary row operations and convert a matrix to its reduced row echelon form. Finally they...
Texas Instruments
Texas Instruments: Linear Operator and Intro. To Eigenvalues & Eigenvectors
In this Derive activity, students use matrix multiplication as a tool for drawing the outlines of a simple stick house. They work in two dimensional space and show the results of multiplying a figure by 2 X 2 matrices.
Stefan Warner and Steven R. Costenoble
Finite Mathematics & Applied Calculus: Topic Summaries: Matrix Algebra
The topic summary outlines matrix algebra. Some topics reviewed are operations with matrices, matrix inverse, and algebra of matrices. The resource consists of definitions, notes, and examples.
University College London
University College London: Elementary Row Operations
Gives the basics on when to use matrices effectively. Example is included to make things clearer.
Wolfram Research
Wolfram Math World: Determinant
This site has a good definition and examples of determinants, the site begins by explaining what the value of a determinant is, then gives an example of the determinant of a two by two matrix, a generic formula for finding the...
Washington State University
Washington State University: Tool for Elementary Row Operations
This site from Washington State University is useful to students as it will break down and solve the matrix for them.
Purple Math
Purplemath: Matrix Row Operations
Purplemath explains each of the elementary row operations and goes through explaining how each step is carried out and the common notation for each operation. The lesson ends with an example of how to solve an augmented matrix.
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.
CK-12 Foundation
Ck 12: Matrix Multiplication
[Free Registration/Login may be required to access all resource tools.] A collection of resources that teach students that, unlike multiplication of numbers, matrix multiplication for square matrices is not a commutative operation, but...
Khan Academy
Khan Academy: Determinant of a 2x2 Matrix
Find the determinant of a given 2x2 matrix. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Algebra: Limitations of Matrix Multiplication
[Free Registration/Login may be required to access all resource tools.] This lesson shows you how to determine if two matrices can be multiplied together and explains that the commutative property does not apply.
CK-12 Foundation
Ck 12: Matrix Multiplication
[Free Registration/Login may be required to access all resource tools.] Add, subtract, and multiply matrices of appropriate dimensions.
Texas Instruments
Texas Instruments: Numb3 Rs: Set the Trap
Based off of the hit television show NUMB3RS, this lesson shows students a real-world application to matrices and matrix operations. Framed in the context of a stolen painting which the thief may hide at different warehouses, students...
Texas Instruments
Texas Instruments: Numb3 Rs: Set the Trap
Based off of the hit television show NUMB3RS, this lesson shows students a real-world application to matrices and matrix operations. Framed in the context of a stolen painting which the thief may hide at different warehouses, students...
Khan Academy
Khan Academy: Adding & Subtracting Matrices
Learn how to find the result of matrix addition and subtraction operations.
Texas Instruments
Texas Instruments: Numb3 Rs: Coded Messages
Based off of the hit television show NUMB3RS, this lesson uses matrices (inverse and multiplication) to decode messages hidden within digital pictures -- a process known as steganography. This method of hidden communication is known to...
Other
Meta Calculator: Matrix Calculator
Use this web-based matrix calculator to solve for functions and operations.
Sophia Learning
Sophia: Row Operations: Lesson 1
This lesson introduces the basic row operations that can be performed on matrices, explaining why they are valid things to do and providing examples of each. It is 1 of 9 in the series titled "Row Operations."
Sophia Learning
Sophia: Row Operations: Lesson 3
This lesson introduces the basic row operations that can be performed on matrices, explaining why they are valid things to do and providing examples of each. It is 3 of 9 in the series titled "Row Operations."
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."