Background: In exploring how emergent bilingual learners' prior knowledge from home and play contexts might influence their scientific reasoning, this study drew upon two distinct research traditions: (a) experimental research from the developmental and cognitive psychology tradition, and (b) research on culturally and linguistically diverse…

The 21st century will require knowledge and skill well beyond the basic levels of reading and arithmetic that American schools know how to produce more or less reliably. Delivering a "thinking curriculum" to all American students requires major reform in the ways schools and districts organize their work. The transformation of the…