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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=x0IaGTzYogU  -- adding

     https://www.youtube.com/watch?v=w33-HtY0s5M  -- adding and subtracting (Math by Fives)

     https://www.youtube.com/watch?v=TbaltFbJ3wE    -- scalar multiplication  (Khan Academy)

     https://www.youtube.com/watch?v=4cGoQnRKSWM  -- scalar 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. 

     https://www.youtube.com/watch?v=ZaW7-vyNKy8  - subtraction problem

     https://www.youtube.com/watch?v=CUnh_BkaIJg  -- multiplication problem   

     https://www.youtube.com/watch?v=HMkZwkuXE_g  -- multiplication problem

     https://www.youtube.com/watch?v=lBXvcpki_cM  -- multiplication problem

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.

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