Numerical understanding and arithmetic skills are easier to acquire for whole numbers than fractions. The "integrated theory of numerical development" posits that, in addition to these differences, whole numbers and fractions also have important commonalities. In both, students need to learn how to interpret number symbols in terms of…

Purpose: The sharp increase in the number of international adoptions in the United States has prompted a heightened interest in the language development of internationally adopted children. Although recent studies have investigated the early language development of adoptees, little is known about the school-age language and literacy skills of…