This is 4th project in the Graphing Calculator series. Here Scratchie will draw quadratic functions or parabolas for you. These are second degree polynomials and you will see how to find the maximum and minimum values as well as the roots for them. Click on the orange letter labels with the up arrows to increase the value of the corresponding slider by exactly 0.1. I would like to thank my collaborators ffred and dapontes for their comments and improvements the project –in particular ffred for making the great line style gizmo. I would also like to thank room209 and her class for their collaboration and use and evaluation of these projects. Finally I would also like to thank tuck92 for his beautiful color gizmo. Play, take apart, remix and have fun. You can see more about the quadratic function at http://en.wikipedia.org/wiki/Quadratic_function
