We know that differentiated instruction helps all students to learn. Yet DI challenges teachers, and nowhere more than in mathematics. Now math education expert Marian Small cuts through the difficulties with her explanation of how to differentiate with two powerful and universal strategies across all math content: Open questions and Parallel tasks. She shows teachers how to start and become expert with these strategies. She also demonstrates more inclusive learning conversations that promote broader student participation. Specific strategies and examples for each grade band are organized around the National Council of Teachers of Mathematics (NCTM) content strands: Number and Operations, Algebra, Geometry, Measurement, and Data Analysis and Probability.