Hi Guy: Sometimes it's a challenge to find the right mix of content and delivery choices when you have a diverse population of students with differing levels of knowledge and motivation. Some teachers will break their student into groups - many ways to do this, all successful to some degree. One combination might be one bright students with several weaker students. Another method is to put the brighter students in one group and the weaker students in another group. Each group is given similar but different assignments. This allows the instructor to spend more time and attention with their weaker folks. Regards, Barry