Which action should be taken first when assembling equipment and materials for a class?

The first action taken when assembling equipment and materials for a class should be to check for missing items. This step is crucial because it ensures that all necessary tools and materials are available before the class begins. If any items are missing, it can disrupt the flow of the class and negatively impact the learning experience for the students. By identifying missing items early, the instructor has the opportunity to find replacements or make necessary repairs without causing delays.

Once the visibility of all required materials is established, other actions such as reviewing operations, arranging room layout, and addressing any deficiencies can be carried out with confidence that what is needed is on hand, thereby fostering a more effective educational environment.