Mathematics education with a focus on students’ mathematical communication, representation, numeracy, and teacher professional learning. Experienced in lesson study, differentiated instruction (e.g., Teaching at the Right Level), and curriculum design within school–university partnerships. Skilled in technology-enhanced assessment and learning analytics to diagnose misconceptions and improve outcomes across online, hybrid, and face-to-face settings. Research interests include ethnomathematics-informed materials, digital teaching modules (ADDIE), and data-informed formative assessment.