Mistakes are at the crux of daily classroom learning. This is the case even in the earliest grades. While the instructional value of mistakes is wellknown among educators, little research documents how young children experience mistakes in real-world school settings. In the present study, I conducted semi-structured interviews with 25 Kindergarten…

This study investigated income group differences in kindergartners' and first graders' (N = 161) arithmetic by examining the link between accuracy and strategy use on simple and complex addition problems. Low-income children were substantially less accurate than high-income children, in terms of both percentage of correctly solved problems and the…