An analysis of speaking activities and when is the best time to use them for Adult ESOL classes

The teaching of speaking skills in class is a difficult one to gauge. Unlike other aspects of language learning which can be marked such as reading, listening and writing tests, and evidence of learning can be revised, speaking activities, unless recorded, do not provide the same standard of evidence.
This research aims to find out if a specific speaking activity is time sensitive in that is it more appropriate, or efficient to use it at the beginning of the class, during the middle or nearer the end.