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Research overwhelming identifies science, technology, engineering, and mathematics (STEM) domains as vital to young children’s later school achievement (Duncan et al., 2007; Grissmer et al., 2010; Morgan, Farkas, Hillemeier, & Maczuga 2016; Watts et al. 2014). However, preschool teachers rarely receive in-depth training in math and science, and culturally and linguistically diverse students from low-income backgrounds are particularly at risk for lower academic outcomes in these domains (Brenneman, Boyd & Frede, 2009; Barnett, 2008; Cognitive Development & Beyond Project, 2009). The ScMath-Dll Instrument for Teacher Learning (SMILE) assessment tool was developed to measure teacher’s knowledge. Items relevant to each workshop assess the following: (1) content knowledge; (2) understanding of the developmental learning trajectory of the concept covered; and (3) application of the content and developmental trajectory to classroom practice (pedagogical content knowledge: PCK). Further information about the intervention and the SMILE assessment, as well as implications and future directions, will be discussed.

Preschool science, technology, engineering, and math (STEM) is important for later learning for all children, including dual language learners (DLLs). However the preschool workforce is generally not well prepared to teach STEM or to work with DLLs, and attitudes and beliefs may play a role in teachers feeling challenged to provide high quality STEM teaching. The objectives of the SciMath-DLL professional development (PD) model are to improve attitudes and change beliefs of educators, increase preschool teachers’ knowledge, and improve classroom instruction around STEM and supports for dual language learners (DLLs). This paper provides preliminary results from a randomized trial of participation in the SciMath-DLL PD on preschool educators’ attitudes and beliefs.

Math and Science Story Time (MASST) program is a library-based informal education program that aims to increase access to high-quality early science, technology, engineering, and mathematics (STEM) books, activities, and content for young children. We developed and piloted resources to expand MASST beyond a family engagement program by inviting preschools to participate in the program. The purpose was to connect the local library with preschool classrooms, provide resources for educators, and bridge the gap between formal and informal learning environments. The present study examines the effects of participation in MASST on preschool educators and children.

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