How can a lead course instructor ensure continuity in class when the main instructor is absent?

To ensure continuity in class when the main instructor is absent, meeting with the substitute instructor to prepare is essential. This preparation allows the course lead instructor to communicate the learning objectives, course material, and teaching strategies that align with the existing curriculum. By having a structured discussion, the substitute can become familiar with the content, the pacing of the course, and any specific student needs. This also establishes clear expectations for how the lesson should flow, thus maintaining the quality and consistency of instruction.

The other options lack the necessary preparation and coordination that is crucial for a successful class. For instance, allowing an assistant to teach without preparation can lead to misunderstandings of the material or objectives, which could hinder students' learning experiences. Contacting multiple instructors to substitute may create confusion regarding who is instructing on what day and might disrupt the learning process. Lastly, using an assistant's personal teaching methods can deviate from the planned curriculum, potentially leading to inconsistencies in what the students are expected to learn.