Constructing scientific arguments is an important skill, and is specifically addressed by the Next Generation Science Standards (NGSS) science and engineering practice of Engaging in Arguments From Evidence. To ensure that students understand the significance of a scientific argument, they need experiences that will help them understand, use, and interpret scientific explanations, evaluate evidence, and think about the development of scientific knowledge. This article focuses on how the authors have used High-Adventure Science (HAS) modules (see "On the web") as a valuable tool for helping 11th grade Earth science students consider scientific evidence as they develop critical-thinking and scientific-argumentation skills.