I agree with Mary Kaye - include something wchich is exciting and sparks interest, not just basics and ukemi.
In my mind, one hour is very short time. I have done one hour beginner's classes, and found that ukemi practise for complete beginners takes time. Beware so ukemi practise does not take the major part of the class. That might be a bit boring, and also terribly frustrating for those who have difficulties in getting the hang of it.