During incidental teaching, what is an advantageous action when a student shows interest in an activity?

Engaging the student with the activity is advantageous during incidental teaching because it capitalizes on the student's motivation and interest. Incidental teaching is based on seizing naturally occurring opportunities to teach and reinforce skills when students show interest, which can lead to increased engagement and learning. By participating in the activity with the student, the instructor can provide immediate instruction, model appropriate behaviors, and facilitate communication in a meaningful context. This aligns with the goal of enhancing skills through meaningful interactions rather than abruptly interrupting the flow of the activity or blocking access, which could diminish the student's interest and motivation to learn. Additionally, engaging the student promotes a positive learning environment and encourages the student to take an active role in their learning process.