The Multiplicative Reasoning Intervention is designed to ensure that third-grade students with or at risk for mathematics difficulties (MD) build a robust understanding of whole number concepts, procedures, and problem-solving skills involving multiplication and division.

The objectives of the project are to:

1. Develop a multiplicative reasoning intervention (MRI) focusing on whole number multiplication and division that includes teacher and student support materials;
2. Establish the usability and feasibility of the intervention in authentic settings for students with or at risk for MD;
3. Conduct a pilot study to examine the fidelity of implementation and establish the potential promise of the program for improving student mathematics outcomes;
4. Examine whether the intervention moderates the impact of student characteristics (e.g., sex, race, ELL status) and attentive behavior on student mathematics performance. 

The research reported herein was funded by grant number R324A190101 from the U.S. Department of Education to the University of California, Riverside. The opinions are those of the authors and do not represent the policies of the U.S. Department of Education.