1. Class Opener:

2. Identifying Matrices

3. Student Check:

4. Matrix Element: Each number in a matrix is a matrix element. You identify a matrix element by its position within the matrix. You will always list the row before the column.

5. Matrix Element Example:

6. Student Check:

7. Matrix Addition

8. Using Our Calculators

9. Subtracting Matrices: As long as you are using your calculator you subtract matrices just like you add them. You must make sure that the dimensions are the same to add and subtract matrices.

10. Matrix Equation: A matrix equation is an equation in which the variable is a matrix. You can use addition and subtraction properties of equality to solve matrix equations:

11. Example:

12. Student Practice: Complete the following worksheet: