This article describes the positive impact of Montessori manipulative materials on four seventh grade students who qualified for academic intervention services because of previous low state test scores in mathematics. This mathematics technique for teaching multi-digit multiplication uses a placemat-sized quilt with different color-coded squares for place value, color-coded bead bars for representing digits, and small numeral tiles in a procedure related to lattice multiplication. The article presents a brief introduction to the Montessori approach to learning, an overview of Montessori mathematics, and an explanation of the Checkerboard for Multiplication with related multiplication manipulatives. Pretest/posttest results of the four students indicated that all increased their understandings of multiplication. The results of an attitude survey showed students improved in enjoyment, perceived knowledge, and confidence in solving multiplication problems. (Contains 19 figures and 5 tables.)