Open a stored Presenter file on the touchscreen. Run through the lesson beforehand, so that you know what the lesson holds for you in terms of seeing and doing. Take note of which button is active in the menu bar, so that you can get off to a good start.
Begin the instruction and use the Presenter lesson as support.
Operate the lesson yourself or occasionally ask a student to do so. When answers are hidden, you can ask the students questions and they can then reveal the answer on the touchscreen themselves. Do not provide feedback after their answer, but wait until the response is revealed on the touchscreen. In this way, students think longer about the question and their answer.
Take extra notes in the lesson as appropriate and save the lesson.