Recently I was discussing the importance of multiple representations with some other teachers and I shared a worksheet1 I had made on evaluating composite functions from graphs and tables. On it was a graph, which I made with Grapher:
This group of teachers don’t have access to Grapher and wanted some suggestions as to how to create graphs like this. Google led me to more than a few possibilities, but none met my very picky expectations: web based, free, and editable.
Very cool, isn’t it? It is an online grapher that allows you to graph up to six functions at one time, select the color of the function, control the scaling of the x and y axes, and more.
If *poof* isn’t enough for you, Andy has the technical details in his post. I’m sure he’d appreciate feedback.