First, I demonstrated how to make a microphone for the whole class. I took special care to point out pitfalls and how to avoid injury. Then, I brought students by their workgroups to a small table where i walked them through the process.
Students strip microphone cable, twist the copper, and solder it to piezo discs. We test them on our Sony handheld recorder, plugging them into the mic jack and tapping them to see if we get signal.
While small groups construct mics, the rest of the class continues to research and blog about their mythical trees. They are looking for inspiration in myth, art, and poetry as they plan to sonify a real tree.
The microphone construction is slow. It is difficult to strip and twist such small wires. I have also inhaled way too much vaporized solder as students operate the iron for the first time. About 65% of all the students have finished their contact mics.
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