Final answer:
In a science classroom, a teacher using visuals to aid English-language learners with equipment is employing the linguistic accommodation of incorporating visuals.
Step-by-step explanation:
In the context of a science classroom with several English-language learners, when a teacher names, labels, and models the use of each piece of equipment needed to complete an experiment, they are primarily incorporating the linguistic accommodation of incorporating visuals. This approach helps English-language learners to associate the terms with the physical items, which aids in understanding and retention of the vocabulary and concepts related to the scientific equipment. Such visual aids are essential for students who are working to master the language of instruction while simultaneously engaging with complex scientific content.