A teacher is introducing a new math concept to a class that includes both advanced and struggling learners. The teacher begins by modeling the concept clearly, checks for understanding, and then provides practice at different levels of difficulty. Which instructional strategy is the teacher using to support this mixed-ability class?

Inquiry-based learning prioritizes student-driven exploration and questioning over direct instruction. While it can engage students, this method typically lacks the structured modeling and immediate feedback provided in explicit instruction, which is crucial for mixed-ability classes where some students may struggle to grasp concepts independently.

Active learning strategies emphasize student participation and engagement through collaborative activities and hands-on experiences. Although beneficial, these strategies may not provide the necessary direct instruction and clear modeling that struggling learners require to understand new concepts effectively.

Metacognitive strategies focus on students' awareness and regulation of their own learning processes. While important for all learners, these strategies do not directly address the initial instruction and modeling needed to teach a new concept effectively, particularly in a diverse classroom setting.