How I Use It
To demonstrate transformations of functions in the coordinate plane, just using traditional graph paper and graphing tools doesn't help to make the job easy. Without having graphing calculators available for all students, Desmos provided a way for students to see and generalize transformations based on the manipulation of the functions at hand. By creating a graphing calculator presentation sheet that allowed the students, as a whole group, to manipulate the function. In doing so, they could make conjectures on what each parameter would do to the function, see their results, and then refine their understanding. It would be great to have the ability to create the file and share with the students, that way each student would have the ability to manipulate the function in their own way and generalize their own understanding in the way that works best for them.
Desmos, as not being the be-all, end-all to your graphing needs, is a respectable way to show dynamic graphing without the need for more expensive equipment. Personally, I liked the ability to have a quick and easy way to graph in front of my students. Even when using graphing calculators, they are not always easy to show to the entire class and Desmos gives you the ability to do so. I am meticulous when it comes to graphing, so that students can see the absolute need for accuracy. Many times, this is a downfall to me, as I spend more time worried about the accuracy and not the content. Desmos allows me to get around this character trait and quickly show students accurate graphs.