The collection of studies in this special issue make an important contribution to our understanding and measurement of the core cognitive and noncognitive factors that influence children's emerging quantitative competencies. The studies also illustrate how the field has matured, from a time when the quantitative competencies of infants and young…

This executive summary presents results from a study that began in 2013-2014, and involves a longitudinal design to follow a sample of 1,169 children (139 Spanish-speaking DLLs) who attended 199 randomly-selected Georgia's Pre-K classrooms. These findings focus on results from the second year of the study, which included 1,034 of these children…

Mathematics problem solving provides a means for obtaining a view of young children's understanding of mathematics as they move through the early childhood concept development sequence. Assessment information can be obtained through observations and interviews as children develop problem solutions. Examples of preschool, kindergarten, and primary…

Early childhood programs serve increasing numbers of children with autism spectrum disorders (ASD) and their families. While many programs have made significant progress in providing educational services responsive to the needs of children with ASD, concerns persist about whether early education programs can meet the educational needs of such…

Just as mathematical ability begins to form in early childhood, so, too, does the knowledge gap separating low-income children from their more affluent peers, who generally enter school with much greater math knowledge. This gap is troubling given that early deficits in mathematical knowledge can have profound implications for future learning. One…

Raising consciousness about the environment and learning ways to care for our planet are important for all citizens of the world. Young children are particularly receptive to learning new concepts; thus the preschool years are an ideal time to teach lessons about the environment. It is often the case that the information learned when children are…

One of the most important goals in primary education is to guarantee literacy and numeracy, two crucial notational systems. Before schooling, children develop some fundamental knowledge on notations from which formal learning should depart. The literature has studied this knowledge, focusing on the development of notational production and…

As a society, we have refined our expectations of the education system to include a higher level of academic preparation for even the youngest learners. In past generations, kindergarten was often the first academic encounter a child had, but we have come to regard the preschool experience as essential to preparing an academically ready…