Hi Phil
That idea sounds interesting to get the students involved in captioning. But first I need to learn it myself to show them an example. I would like to see your example first, too so I understander better the instructions you wrote in Portuguese. There is a few part I don't understand well. It's in the beginning when you explain about using Audacity and Paint. I know Audacity and worked with it, too.
I will send you the text in German. I need to listen to Raquel's voicethread and take notes of the what she says. Do you understand German so you can translate it into English?