In the K-12 curriculum program applied globally, teachers are challenged to apply the Differentiated Instruction (DI) which is responsive to the needs of all students and facilitates learning. In the Philippines, the Department of Education recently mandated the implementation of DI in the K-12 curriculum. Hence, this study sought to answer research question: What differentiations are practiced by the Grade 7 Mathematics teachers in their classes? Data gathered from lesson plans, interviews, and classroom observations of 21 Grade 7 Filipino mathematics teachers were qualitative analyzed through the Framework Analysis by Ritchie and Lewis (2013).Findings show that Maker's principles of differentiation on content, process, and product were applied in instruction though not to the fullest; and Tomlinson's principles are embedded in the teaching strategies and student's activities, considering student's readiness and interests.