I’m thinking an easy solutions to teacher anxiety. The problem where you under perform because your not used to getting questions verbally. Would be to incorporate audio version of written exercises or questions in digital textbooks. The audio version is not meant to be exactly as the text. Here you can use your imagination to guide the student. Give them a sense of direction, encourage or otherwise engage them. I found a good set of information which could be used to enhance the spoken questions on ”Using Questioning to Stimulate Mathematical Thinking” – http://nrich.maths.org/2473 .