As the vision in "A Framework for K-12 Science Education" and the Next Generation Science Standards (NGSS) takes hold in schools and classrooms, there is an urgent need for teacher professional development (PD) programs that align with NGSS-designed curriculum materials and address the unique strengths and needs of diverse student…

The use of English to teach content subjects has been a growing trend in many parts of the world. It is labelled in a variety of ways, such as content-based learning, content and language integrated learning, immersion education, theme-based language teaching, and bilingual education, but it is referred to in this paper as English-medium…

Although the number of emergent bilinguals (EBs), also known as English language learners (ELLs) in U.S. K-12 schools is growing at an increasing rate, K-12 mainstream teachers remain predominantly white and monolingual and receive little training for working with such learners. In addition, many states mandate "English-only" policies…