Basic phylogenetics and associated "tree thinking" are often minimized or excluded in formal school curricula. Informal settings provide an opportunity to extend the K-12 school curriculum, introducing learners to new ideas, piquing interest in science, and fostering scientific literacy. Similarly, university researchers participating in…

This practitioner issue brief outlines successful strategies and recommendations for state-level policymakers, administrators, schools, and districts that are based on a 5-year evaluation study on the learning environment for ELLs in the state of California. This brief offers four critical building blocks that should be in place to effectively…