At the 2013 Baltimore Regional NCTM Meeting, I gave a presentation on Picturing Functions and Functions of Pictures. In the description of my presentation I’d promised to show how to use Sketchpad to create special effects, so when it came time to prepare, I figured I needed to deliver on my promise.
So I wrote a blog post and created a movie trailer, containing a number of special effects made with Sketchpad. During the presentation itself I showed how to create the Wavy Bridge special effect. Teachers who came to the presentation liked the special effect and wanted to know how to create it themselves. I showed them, they were surprised at how easy it was, and I realized that my YouTube movie trailer needed a behind-the-scenes supplement. I finally got around to recording the how-to video, and here it is. (You can use the Pause button to follow along, constructing your own special effect as you watch.)
In my next post I’ll show the brand new Graph Dancer activities that premiered during the same presentation.