IntroductionThis project-based learning (PBL) unit focuses on monarch butterflies, guiding students to explore their biology, migration patterns, and the environmental challenges they face. Designed for elementary students, the unit promotes 21st-century skills such as critical thinking, communication, and collaboration. Unit OverviewThe curriculum covers several core concepts:Migration and Biology: Students learn about the cyclical nature of the monarch's 3,000-mile migration across North Ameri