Final answer:
When teaching mat work to a group, the instructor should offer clear demonstrations, provide individual feedback, cater to varying skill levels, and encourage a collaborative environment.
Step-by-step explanation:
When teaching mat work to a group of 12 clients, as the instructor, you should ensure that all clients have a clear view of the instructor for demonstrations and you should circulate the room to give individual attention and feedback. It's also important to be aware of the skill levels within the group and provide modifications for each exercise to accommodate all participants.
Moreover, you need to foster a collaborative and supportive environment that encourages clients to collaborate and engage with each other. To help in understanding, record observations, provide feedback, and use collaborative exercises to enhance the learning experience for all clients.