Background/Context: As increasing attention is paid to preparing students to succeed in school, the development and adoption of research-based curricula have become progressively more important. However, many curricular designs lack a basis in scientific evidence; research and curricular design are frequently treated as two separate enterprises.…

The acquisition of vocabulary is an important aspect of young children's development that may impact their later literacy skills (National Reading Panel, 2000; Cunningham & Stanovitch, 1997). Deaf children who are American Sign Language users, however, often have smaller vocabularies and lower literacy levels than their hearing peers…