As a teacher, planning your Sunday school curriculum can be a challenge. One key element is to encourage emotional involvement. Your lesson should help them to understand the lesson and want to use it in their own lives.
While much of the Sunday school class should be light-hearted and focused on fun, an element of learning and growing must be included as well. When you read from the Bible or teach a specific lesson, give your students a chance to reflect on the ideas before responding.
Then, ask specific, thought-provoking questions that will require them to think and apply these Christian ideas to their own lives. Of course, this must be tailored for your age group, so some groups will have quite general questions while others will require significant application to life events.