Khan Academy

Multiplying matrices-video (K-A)

Defined matrix operations (K-A)

Dimensions of identity matrix (K-A)

Intro to identity matrices (K-A)

Intro to identity matrix (K-A)

Is matrix multiplication commutative? (K-A)

Matrix multiplication dimensions (K-A)

Properties of matrix multiplication-link (K-A)

Using identity & zero matrices (K-A)

Matrices as transformations-link (K-A)

Using properties of matrix operations (K-A)

Matrix from visual representation of transformation (K-A)

Transforming polygons using matrices (K-A)

Zero matrix & matrix multiplication (K-A)

Transforming vectors using matrices (K-A)

Visual representation of transformation from matrix (K-A)

Determinant of a 2×2 matrix (K-A)

Determining invertible matrices (K-A)

Intro to matrix inverses (K-A)

Finding inverse of a 2×2 matrix using determinant & adjugate (K-A)

Matrix word problem: vector combination (K-A)

Representing linear systems with matrix equations (K-A)

Solving linear systems with matrix equations (K-A)

Matrix word problem: prices (K-A)

Intro to theoretical probability (K-A)