I have a Y10 GCSE class of 6 (occasionally 7) students. My problem is the vast difference in ability and in commitment to the course. The higher ability students are in every lesson and are always switched on to what we are doing. The lower ability students miss numerous lessons due to exclusion, isolation, absence and illness. When they are in, they are often not engaged in the lesson as they have missed the lessons before hand and they then become very disruptive for the others. They want to to practical work, which is fine as they all work individually then, but I am finding it increasingly difficult to teach the Edexcel set works. I have spend hours developing different ways of getting them to learn key terminology but it only seems to benefit those that are interested. Does anyone have any suggestions of how to recapture the interest of those students who dip in and out of the lessons and miss so much work, without jeopardising the learning of the those students who have already understood and are ready to move on?