### Math Shelf's Evidence Base

Math Shelf is a tablet-based preschool and Kindergarten math program that provides over 1,500 sequenced math games and activities rooted in Montessori instructional approach. The curriculum is accessible to children as young as three, and covers math topics through first grade.

Math Shelf was developed to eliminate early math achievement gaps by providing high-quality math learning opportunities for low-income children. Research shows that proficiency in early math skills is critical for children's long-term school and life success. However, the majority of low-income children start kindergarten one year behind their peers in math, and this achievement gap widens to 2.5 years by fifth grade.[1] If educators work to eliminate early math gaps (in pre-K and Kindergarten), we'll reduced time and money spent of later interventions and put many more children on the path to school success.

Math Shelf's Evidence Base

Two peer-reviewed randomized controlled trials, and one peer-reviewed quasi-experimental study demonstrate that Math Shelf significantly increases student achievement compared to in-class teaching and other leading digital early math programs.

Studies were conducted in organizations serving low-income students, and included primarily Black and Latinx populations. While effect sizes were uniformly large (ranging from 0.57 to 1.53; 6 months to 1.5 years more learning than controls), variation is likely due to study duration and implementation fidelity. Of particular interest is the finding that initially low performing and minority students made the greatest math learning gains. Table 1provides a summary of Math Shelf’s empirical results: