Basing a lesson on what we can do ourselves as in the examples above clearly has the enormous advantage of not being susceptible to technical malfunction (though that can happen!), power cuts, or unavailability. However, an over-reliance on what we ourselves can offer places excessive demands upon us. It is hard to be permanently motivating and amusing, and it is taxing to have to offer a perpetually varied diet of voices, gestures, and expressions. Nevertheless the ways in which we use our voice, the ways in which we model language and employ gesture and expression are all basic and important teaching skills.