The Next Generation Science Standards (NGSS) have spurred renewed interest in the epistemologies that students adopt as they engage in science practices. One framework for characterizing students' epistemologies is the "epistemologies in practice" framework (Berland et al. (2016), "Journal of Research in Science Teaching,"…

Traditionally, content assessments have been carried out through written language. However, the latest standards in U.S. K-12 education expect all students, including English learners (ELs), to demonstrate their content learning using multiple modalities. This study examined the performance of fifth-grade students at varying levels of English…

Over the last decade, translanguaging pedagogy has gained much traction in language education and has been taken up in a wide range of educational settings. Studies on translanguaging pedagogy, however, have largely focused on its affordances; research on its challenges remains limited. This classroom discourse study examines both the affordances…

Dynamic assessment (DA) seeks to understand learners' abilities that are still developing by embedding mediation (i.e., contingent forms of assistance) into the assessment process. To date, DA studies have been carried out primarily in contexts focused on language learning. However, in content classrooms (e.g., science, math), English learners…

Research on TESOL materials development has focused primarily on instructional materials for contexts in which students are learning English separate from academic content (e.g., science, mathematics). This research could benefit from expansion given the increasing number of contexts in which students are learning content and English language…

The authors evaluated the effects of P-SELL, a science curricular and professional development intervention for fifth-grade students with a focus on English language learners (ELLs). Using a randomized controlled trial design with 33 treatment and 33 control schools across three school districts in one state, we found significant and meaningfully…

Using data collected from two multiyear teacher professional development projects employing randomized control trials, this study describes the development and validation of a paper-based test of elementary teachers' science content knowledge (SCK). Evidence of construct validity is presented, including evidence on internal structural…