Differentiation is a teaching strategy rather than a prescribed level of teaching. It factors students’ individual learning styles and levels of readiness first before designing a lesson plan. Research on the effectiveness of differentiation shows this method benefits a wide range of students, from those with learning disabilities to those who are considered of high ability. The three prescribed levels of teaching are: Memory level of teaching: Thoughtless teaching wherein emphasis is laid down on the presentation of the facts and information and its cramming. Understanding level of teaching: Thoughtful teaching wherein the teacher strains to make students understand the generalizations, principles and facts. Reflective level of teaching: Upper thoughtful level of ‘problem centered’ teaching that includes understanding as well as memory levels. The teacher creates an open environment and throws such a problem before the students that their interest is aroused and they are motivated to swing into action, formulating and testing their hypothesis to solve the problem. The teacher reflects over their teaching practices, analyzing how something was taught and how the practice might be improved or changed for better learning outcomes.