achers follow the students' lead and utilize their preferred items and activities to teach them within the natural context (Koegel, Harrower, & Koegel, 1999). This approach is similar to embedded instruction that involves the incorporation of learning activities within the ongoing classroom routines (Polychronis, McDonnell, Johnson, Riesen, & Jameson, 2004). Apart from these naturalistic teaching approaches, educators should also be able to employ systematic instruction to teach the students. In this model, specific goals are predetermined and instructional procedures carefully formulated. The effectiveness of these instructional procedures is then assessed to determine whether modifications
...