Place value concepts were measured longitudinally from kindergarten (2017) to first grade (2018) in a diverse sample (n = 279; M[subscript age] = 5.76 years, SD = 0.55; 135 females; 41% Black, 38% White, 8% Asian, 12% Latino). Children completed three syntactic tasks that required an explicit understanding of base-10 symbols and three approximate…

Research has established the link between socioeconomic status (SES) and children's reading development. However, the theoretical mechanisms underlying the association between them have yet to be fully understood. Moreover, few previous studies exploring the mechanisms tapped both first language (L1) and second language (L2) at the same time. In…