Summary: A teacher's guide to working with matrices on the calculator.

This starts with a lecture. You have to show them how to do matrices on the calculator. They should be able to…

- Enter several matrices at once
- Add several matrices
- Subtract
- Multiply
- Find inverses

All of this is explained step-by-step in the “Conceptual Explanations.”

There are two things I stress. First, whenever I enter a matrix, I always check it. For instance, after I enter matrix [A], I go back to the home screen and go [A][Enter], and the calculator displays matrix [A] to me, so I can make sure I typed it right. One small mistype will ruin a whole problem, and it’s really easy to do!

Second, the calculator is very smart about interpreting equations. After you enter three matrices, you can just type [A][B]-1-[C] and it will multiply [A] by the inverse of [B] and then subtract [C].

“Homework—Calculators.” Depending on how things go, they may be able to finish this in class and have no homework.

Comments:"This is the "teacher's guide" book in Kenny Felder's "Advanced Algebra II" series. This text was created with a focus on 'doing' and 'understanding' algebra concepts rather than simply hearing […]"