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Unit 3 -- Matrices

Prerequisites:  Identify dimensions and elements of a matrix.

Target 1:  I can add, subtract, and multiply matrices including scalar and matrix multiplication.

https://www.youtube.com/watch?v=0mOWqK9OJtU  -- multiplying a matrix by a matrix  (Math by Fives)

https://www.youtube.com/watch?v=n8ICyS8CKIQ  -- multiplying a matrix by a matrix

Target 2:  I can understand that matrix multiplication is not a commutative operation but still satisfies the associative and distributive properties.

Target 3:  I can use addition, subtraction, and multiplication of matrices to solve real-world problems.

Target 4:  I can solve matrix equations for specified variables.

https://www.youtube.com/watch?v=54xVG7X6tOE -- look at Example 4

Target 5:  I can calculate the determinant of 2x2 and 3x3 matrices.

Target 6:  I can find the inverse of a 2x2 matrix.

https://www.youtube.com/watch?v=h4uMjIbsHpA  -- finding inverse with the calculator

Target 7:  I can use technology to perform operations on matrices, find determinants, and find inverses.

I'll show you how in class.

Target 8:  I can solve 3-variable systems of equations by using matrices.