First of all, I need to give a hat tip to my instructor, James E. Howell, at the Advanced Placement Summer Institute at Arkansas State University last month. I didn’t find Winplot on my own. I learned about it from him.
According to it’s homepage, Winplot is “a general-purpose plotting utility, which can draw (and animate) curves and surfaces presented in a variety of formats.” It’s also FREE.
To me, it’s greatest value is not in manipulation or instruction or labs or activities, like a Geogebra or a GSP, but it is in creating beautifully accurate models of all kinds of analytic equations for use in presentations, worksheets, exams, etc.
Here’s a graph I created in about 3 minutes for a worksheet I used in Calculus yesterday.
Winplot does everything. Piecewise functions, trigonometric functions, even implicitly defined functions. Holes, gaps, asymptotes, you name it. There’s a bit of a learning curve, so extreme googling might be necessary until you figure out what you want to do, but if you can dream it, I’ll bet Winplot can graph it.
Learn more about Winplot here.