A teacher reviews prior units for 10 minutes at the start of each class for the week leading up to the exam. Which strategy is the teacher using?

Interleaving refers to mixing different topics or subjects during study sessions rather than focusing on one at a time. While the teacher is reviewing prior units, they are not introducing varied topics or subjects simultaneously, which is essential to interleaving. Therefore, this is not the strategy being employed.

Metacognitive reflection involves students thinking about their own learning processes and evaluating their understanding. While such reflection can occur during review, the described activity is focused on direct content review rather than encouraging students to assess their own understanding, making this an incorrect choice.

Dual coding combines verbal and visual information to enhance learning, such as using diagrams alongside explanations. The scenario does not mention any visual aids or the integration of different modalities; it solely focuses on reviewing content verbally, thus ruling out this strategy.