Make every class "hands on" by including creative activities that relate to the subject being taught and make one of their assignments to come up with activities that the students will enjoy while learning. Also suggest you ask them to identify no-cost incentives for each successful week of class. Have them identify what success looks like and have them evaluate if they meet their goal (keep all the focus on them). Incentive could be a 5 minute break in the middle of class where they can stand up, close their eyes, talk to neighbors, etc. -- or if everyone agreed, they could save up those 5 minute breaks and end class early at the end of the week. If you can make them feel like they have some control in how they are learning, you may have created a win-win situation. Try to pair up those who are very interested with those who have no interest in various activities. All the best to you!!