Description: 1 Picture ≥ 1000 formulas
We all have our methods of helping students gain an understanding of this:
Let’s start simple as most of us do in the classroom. In years past, I (and many others) have helped students explore this concept with something like:
This concept develops as students explore more. They learn that operations inside the primary piece of the function have horizontal effects, while outside correlates to vertical changes. Easy enough. But then, it happens.