Final answer:
Worksheets do not belong to the traditional model of direct instruction which is characterized by methods such as lectures and demonstrations; worksheets are more active and not a central component of direct instruction.
Step-by-step explanation:
Direct instruction is a teaching method that is highly teacher-directed and is characterized by a clear and precise delivery of instruction. It usually involves methods such as lectures, where an instructor speaks to a class, and demonstrations, where an instructor shows how to do something. Experiments can be a part of direct instruction when they are used to demonstrate a concept. However, they are more often associated with an inquiry-based learning approach, which encourages students to explore and discover knowledge for themselves. On the other hand, worksheets are designed to engage students actively in practicing and applying knowledge, and although they can be part of the direct instruction process, they are typically not considered a main feature of direct instruction.
Therefore, the answer is D) Worksheets, as they do not fit the classic model of direct instruction usually associated with passive reception of knowledge rather than the active engagement that worksheets require.