The practices of scientific argumentation and modeling involve using evidence and reasoning to create and evaluate claims about how or why something happens in the world. For example, why did a town flood in 1915 when a dam was built nearby? Scientists and science learners develop an understanding of the world through constructing arguments and models and determining which best account for observations at a given time. The Next Generation Science Standards (NGSS) invite all students — including primary students — to engage in argumentation and modeling as interconnected practices.
In this video series, we share key principles and strategies for engaging K-2 students in the practice of scientific argumentation with explanatory models. We join a second grade scientific community in the midst of exploring a real-life question: What caused the town of Moncton to flood?
As they pursue answers to this question, you’ll see that students are not making arguments about isolated observations (e.g., which kind of soil water flows through fastest), but rather arguments that connect to their explanatory models of the phenomenon (the flooding of Moncton*). We call this “model-based CER (Claims, Evidence, and Reasoning),” where argumentation occurs in service of developing models of phenomena and supporting deeper, more interconnected science learning.