LikeLike

]]>Well, the topic of 12-3 was “Finding the Determinant and Inverse Matrices,” so I could tell that was where we needed to start, not 12-4.

Once we found the determinant for a problem was 2, we were trying to find the inverse matrix. She saw A^-1 as the notation for inverse matrix, so immediately put down -2. Wow. This is a PreCalculus class, so I would hope that she knew inverse functions was not the same as opposite sign (additive inverse). Once we straightened out that she wanted the multiplicative inverse (reciprocal), then we needed to do scalar multiplication. “What’s that?” Back to 12-2 which was Multiplication with Matrices — both scalar and matrix multiplication.

Finally we are ready to do 12-4. Or so I think. Once we found the inverse matrix of our given problem, then we needed to left multiply the inverse matrix with the matrix on the right-hand side of the equation. She tried to apply the same idea as scalar multiplication and didn’t get the correct answer. Back to 12-2 to learn how to do matrix multiplication.

What reminded me of this post is that, all along the way, I was asking questions. Unfortunately, I think I asked so many questions, she was frustrated by my questions and the process. Since we are an online school working virtually, I have had students get frustrated before and (I believe) log out or “lose connection.” Fortunately for me, she did stick around and we were successful to the point that, at the end, she rated herself a 10/10 for her ability to solve these types of problems in the future.

But I wanted to point out that while we do want to challenge our students, we don’t want to do so to the point of frustration. It is much easier to see that working with a student face to face than online, but one feature that I know I will continue to work on.

Say, this sounds like the beginning of a new post altogether!

LikeLike

]]>Since we tend to grasp different aspects each time we do something (even if it is the same something), I think I am going to go through it again before the summer, and then once again when the new material is uploaded just to refresh my memory on this great content.

Has anyone else gone through the course (student or parent/teacher)? What did you think? Have you noticed a change in yourself or your actions afterwards?

LikeLike

]]>LikeLike

]]>Which type of alternative school are you at?

LikeLike

]]>LikeLike

]]>LikeLike

]]>