A teacher gives a puzzle to her class-VIII students and asks them to solve it by speaking out how they solve it. What is this strategy known as?

The 'think aloud protocol' is a research and teaching strategy where learners verbalise their thought processes as they solve problems or complete tasks. It makes invisible cognitive processes visible, allowing teachers to understand learners' reasoning and helping learners develop metacognitive awareness. It is distinct from merely 'speaking aloud' because it specifically focuses on articulating thinking processes.