Teaching that supports children in scientific sensemaking emphasizes discourse that prioritizes children's ideas and supports children in engaging in disciplinary practices. However, supporting science talk requires skillful instruction, and without support, teachers may find it challenging to engage our youngest students in rich discussions. In…

Evolution by natural selection is key to understanding life and of considerable practical importance in public health, medicine, biotechnology, and agriculture. "The Next Generation Science Standards" (NGSS) include natural selection among several evolutionary concepts that all third-graders should know. This article explores a novel…