In this article, Mann and Pynes describe a five-day mini-project-based learning (PBL) unit about organisms and their environments that addresses the "Next Generation Science Standards" (3-LS4-3). Third-grade students were asked how they could determine which animals live in their neighborhoods. In teacher-determined collaborative groups,…

Problem-based learning (PBL) is one approach to teaching science that supports the notion that students construct knowledge within contextual settings, and that critical thinking and application are best fostered within these realistic contexts. In other words, learning activities are best applied when they are authentic or embedded in real-life…

The authors combined content-driven and inquiry-based lessons into the framework of problem-based learning (PBL). They did this in eight third- through sixth-grade classrooms--two each from grades 3-5, one from sixth grade, and one mixed-grade special education. These older elementary students explored a local problem of lobsters infected by…