When I teach computer graphics, some concepts seem to confuse students more than others. One of those is has to do with matrix multiplication.
When you multiply two numbers together, the order of the numbers doesn’t matter. For example, 5×7 is the same as 7×5. We say that multiplication of numbers is commutative.
But multiplication of matrices is not commutative. If A and B are matrices, then AxB is generally not the same as BxA.
Just last week a student was asking me about this. So yesterday I created a little Web app to help make it easier to understand.
This was only my first attempt. I’m sure I will keep tweaking this until I get it just right.
But meanwhile, you can check it out HERE.