The home mathematics environment (HME) includes characteristics of the family and home setting that contribute to children developing mathematical understanding and skills. Intervention research indicates that activities conducted in the HME are critical to the development of early mathematics skills and can support children as they transition from informal to formal school settings, such as from preschool to kindergarten.

Children with disabilities often enter school with lower mathematics skills compared to their typically developing peers and require supplemental support in mathematics. The purpose of this project is to develop a HME intervention for preschool-aged children with developmental delays (DD). The HME intervention is designed to be supplemental to and build upon the math instruction that children receive as part of their preschool curriculum.