At Education Development Center, the authors developed professional learning for teachers that reflects the vision of the "Next Generation Science Standards" ("NGSS") and makes explicit connections between science and language. In the authors' recent project, Literacy and Academic Success for English Learners through Science (LASErS) they worked with preK, Kindergarten, and Grade 1 teachers in an urban district in which approximately 50 percent of students are DLLs. In this article, the authors focus on their work with Grade 1 teachers who participated in a Living Things module. This module consisted of four full-day face-to-face instructional sessions--designed to build teachers' pedagogical content knowledge (PCK) in life science and support their integrated science and language teaching with a focus on DLLs.