Right Start Math Level D strengthens multiplication mastery, long division, measurement, geometry, and multi-step word problems through hands-on manipulatives, games, and guided lessons. Families appreciate the intentional depth—like factoring and geometry tools—shown in each lesson, which develops flexible thinking instead of memorization. It’s distinct for preparing kids for upper-elementary math through interactive, skill-building variety rather than rote repetition. Level D is best for learners who are confident with addition and subtraction, beginning multiplication, and understanding place value into the thousands. Level D is typically equivalent to skills learned in third or fourth grade, but RightStart recommends taking this placement test to determine the best level for your child to begin.