The document discusses differentiation as a teaching strategy to meet different learning needs in a group. It provides 12 examples of differentiated strategies or activities, such as writing group/individual targets, adjusting questions, choice boards, and leveled reading. The document also outlines steps to differentiate, including introducing a concept to the whole class, dividing students into tiered groups, creating varied activities, and assessing students. Challenges of differentiation and ways to manage it in the classroom are also addressed.