Curated OER
Count the Differences
Learners determine the degree of polynomials. In this determining the degree of polynomials lesson, students find the difference between consecutive y-values. Learners find the degree of a linear, quadratic, and cubic function by this...
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...
Other
A Very Gentle Introduction to Matrices
Excellent tutorial site on the basics of matrix operations. The site has definitions and examples
![Metal: Matrices [Pdf] Lesson Plan](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Metal: Matrices [Pdf] Lesson Plan")
Other
Metal: Matrices [Pdf]
The resource is a lesson guide that teaches the basic mathematical concepts needed for teaching economics and financial economics. Topics include matrix transposition, matrix inversion, and operations with matrices. Applications of Excel...
Wolfram Research
Wolfram Math World: Matrix
From Mathworld.com as site on Maxtricies. Includes formulas, definitions, and links to related articles.
Wolfram Research
Wolfram Math World: Diagonal Matrix
This site gives a definition and examples of a diagonal matrix. The site also contains many links to other related Math World sites.
Richland Community College
Operations With Matrices
This site has an explanation for many operations of matrices, including equality, addition, subtraction, multiplication, and identity.
Texas Instruments
Texas Instruments: Determinants and Inverse Matrices
In these questions, students are asked to find the determinant and the inverse of four 2 x 2 matrices. These multiple choice questions have solutions provided.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Geometria De Los Determinantes
In Spanish. In this interactive session you will study the second order determinant and its properties. Both methods geometrically and algebraically are presented.
J Coffman
Joseph Coffman's Lecture Notes: Adding and Subtracting Matrices
Students learn about matrix subtraction, matrix addition, and matrix equations. An assessment is included to check for comprehension of the concepts.
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.
McGraw Hill
Glencoe: Quiz on Determinants and Multiplicative Inverses of Matrices
Learners demonstrate comprehension of advanced mathematical concepts in Algebra II. The questions check understanding on matrices. Topics include determinants and multiplicative inverses.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Matrix Multiplication
Find a quick, concise explanation of matrix multiplication. Examples are given and clearly explained.
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.
Analyze Math
Analyze Math: Calculate Determinant of a Matrix
Learners explore the Algebra II topic of matrices. The tutorial demonstrates how to calculate the determinant of 2 by 2 and 3 by 3 matrices. The activity includes examples with detailed solutions.
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: Intro to Zero Matrices
Explains what a zero matrix is, shows examples, and provides some interactive practice exercises. Help is available for exercises if it is needed. A summary chart compares the number zero to the zero matrix.
Purple Math
Purplemath: Matrix Inversion: Finding the Inverse of a Matrix
Inverse matrices are very useful for solving matrix equations. But, given a matrix, how do you invert it? How do you find the inverse? The technique for inverting matrices is kind of clever. For a given matrix A and its inverse A-1, we...
Purple Math
Purplemath: Minors and Cofactors: Expanding Along a Row
A "minor" is the determinant of the square matrix formed by deleting one row and one column from some larger square matrix. To find the determinant of the matrix A, you have to pick a row or a column of the matrix, find all the cofactors...
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.
Khan Academy
Khan Academy: Determine Invertible Matrices
Given a 2x2 matrix, determine whether it has an inverse. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.