Worksheet
Curated OER

Heat Index

For Students 9th - 11th
In this algebra worksheet, students solve for the heat index using the correct variable. There is an answer key with this worksheet.
Worksheet
Curated OER

Linear Systems: Least Squares Approximations

For Students 11th - Higher Ed
In this least squares approximation instructional activity, students use linear algebra to find the least square error and the equation of a line for given points. They find the equation of a parabola through provided points. This...
Lesson Plan
Curated OER

Solution Sets and Linear Independence of Vectors

For Teachers 11th
Eleventh graders study homogeneous linear systems. In this linear system of equations instructional activity, 11th graders write linear system solutions in parametric vector form. Students also identify the connection between linear...
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Multiplying Matrices by a Scalar

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson covers multiplying matrices by a scalar number. Students examine guided notes, review guided practice and attempt practice problems.
Website
Cool Math

Coolmath: Multiplying Matrices

For Students 9th - 10th Standards
This CoolMath resource will help students understand how to multiply matrices.
Unit Plan
CK-12 Foundation

Ck 12: Multiplying Matrices by a Scalar

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Multiply matrices by scalars to produce new matrices, e.g., as when all of the payoffs in a game are doubled.
Unit Plan
TED Talks

Ted: Ted Ed: How to Organize, Add and Multiply Matrices

For Students 9th - 10th Standards
When you're working on a problem with lots of numbers, as in economics, cryptography or 3D graphics, it helps to organize those numbers into a grid, or matrix. Bill Shillito shows us how to work with matrices, with tips for adding,...
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Khan Academy

Khan Academy: Multiply Matrices by Scalars

For Students 9th - 10th Standards
Find the matrix that is a result of multiplying a given matrix by a given scalar. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unknown Type
Khan Academy

Khan Academy: Multiply Matrices

For Students 9th - 10th Standards
Find the result of the multiplication of two matrices. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
PPT
Sophia Learning

Sophia: Multiplying Matrices by Scalar Values: Lesson 3

For Students 9th - 10th Standards
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."
PPT
Sophia Learning

Sophia: Multiplying Matrices by Scalar Values: Lesson 5

For Students 9th - 10th Standards
This lesson explains how to multiply a matrix by a scalar. It is 5 of 5 in the series titled "Multiplying Matrices by Scalar Values."
Unit Plan
Sophia Learning

Sophia: Multiplying Matrices by Scalar Values: Lesson 1

For Students 9th - 10th Standards
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."
Handout
University of Minnesota

University of Minnesota: Math Insight: Multiplying Matrices and Vectors

For Students 9th - 10th Standards
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.
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Khan Academy

Khan Academy: Matrix Equations: Scalar Multiplication

For Students 9th - 10th Standards
Solve equations where the unknown is a matrix by using multiplication by a scalar. Students receive immediate feedback and have the opportunity to try questions repeatedly or receive hints.
Unit Plan
CK-12 Foundation

Ck 12: Matrix Multiplication

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Add, subtract, and multiply matrices of appropriate dimensions.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Adding and Subtracting Matrices

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson covers adding and subtracting matrices with the same dimensions. Students can watch a video tutorial, explore guided notes and then attempt practice...
Activity
Analyze Math

Analyze Math: Matrix Addition and Multiplication

For Students 9th - 10th Standards
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...
Handout
Varsity Tutors

Varsity Tutors: Hotmath: Algebra Review: Matrix Multiplication

For Students 9th - 10th Standards
Find a quick, concise explanation of matrix multiplication. Examples are given and clearly explained.
Unknown Type
Khan Academy

Khan Academy: Determinant of a 2x2 Matrix

For Students 9th - 10th Standards
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.
Activity
Interactive Mathematics

Interactive Mathematics: Multiplication of Matrices

For Students 9th - 10th Standards
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.
Handout
Varsity Tutors

Varsity Tutors: Hotmath: Algebra Review: Matrix Row Operations

For Students 9th - 10th
Find a quick, concise explanation of the three basic matrix row operations. Examples are given and clearly explained for each of the operations: switching rows, multiplying a row by a number and adding rows/multiples of rows.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Matrix Multiplication

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson explains how to multiply two matrices and presents practice exercises.
Activity
J Coffman

Joseph Coffman's Lecture Notes: Matrix Multiplication

For Students 9th - 10th Standards
The lesson examines matrix multiplication. Students learn about notation, limitations, and the procedure to multiply matrices. An assessment is included to check for comprehension of the concept.
Unit Plan
Stefan Warner and Steven R. Costenoble

Finite Mathematics & Applied Calculus: Matrix Addition and Scalar Multiplication

For Students 9th - 10th Standards
Students learn about matrix addition and subtraction, and scalar multiplication. The tutorial consists of class notes, examples, and practice problems. Review exercises and a chapter quiz are included.