Activities
One major feature of TouchPlot is the ability to define functions depending on one parameter or several parameters (at most 4 of them) and see in realtime how their graph are changed by adjusting values of these parameters with convenient sliders.
It makes TouchPlot a very handy and nice tool to experiment and to learn.
A couple of activities to begin with, and more to come.
A quick study into quadratic polynomials.
Conics with polar equation.