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# 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:

When comparing Math Shelf to other early math digital programs, Math Shelf produces **3x the learning**, when children play twice a week for 10 minutes each session over the course of 20+ weeks. Most critically, Math Shelf is easy to implement, requires little teacher training, and minimal teacher supervision.

At the date of this publication, Math Shelf is being used in 1,500 classrooms serving 30,000 students. As further evidence of demand, Math Shelf has seen an annual renewal rate of approximately 80 percent, and a sales compound annual growth rate of 200 percent.

Interested in learning more ? Contact John Schacter, Ph.D.

[1] Isaacs, J. B., Starting School at a Disadvantage: The School Readiness of Poor Children, Washington, DC: Center on Children and Families at the Brookings Institution (March 19, 2012). Retrieved from https://www.brookings.edu; National Research Council. (2009). Mathematics learning in early childhood: paths toward excellence and equity. Washington: National Academies Press.

[2] Jordan, N. C., & Levine, S. C. (2009). Socioeconomic variation, number competence, and mathematics learning difficulties in young children. Developmental Disabilities Research Reviews, 15, 60–68; Schacter, J., & Jo, B. Improving preschoolers’ mathematics achievement with tablets: a randomized control trial. Mathematics Education Research Journal. 2017; 1-15.